20981680440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{73}}^1\times {\mathrm{6983}}^1$

素因数の和:7091

約数の個数: 256

約数和(自身を含む): 74421504000

約数和(自身を除く): 53439823560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 73, 84, 98, 105, 120, 140, 146, 147, 168, 196, 210, 219, 245, 280, 292, 294, 343, 365, 392, 420, 438, 490, 511, 584, 588, 686, 730, 735, 840, 876, 980, 1022, 1029, 1095, 1176, 1372, 1460, 1470, 1533, 1715, 1752, 1960, 2044, 2058, 2190, 2555, 2744, 2920, 2940, 3066, 3430, 3577, 4088, 4116, 4380, 5110, 5145, 5880, 6132, 6860, 6983, 7154, 7665, 8232, 8760, 10220, 10290, 10731, 12264, 13720, 13966, 14308, 15330, 17885, 20440, 20580, 20949, 21462, 25039, 27932, 28616, 30660, 34915, 35770, 41160, 41898, 42924, 48881, 50078, 53655, 55864, 61320, 69830, 71540, 75117, 83796, 85848, 97762, 100156, 104745, 107310, 125195, 139660, 143080, 146643, 150234, 167592, 195524, 200312, 209490, 214620, 244405, 250390, 279320, 293286, 300468, 342167, 375585, 391048, 418980, 429240, 488810, 500780, 509759, 586572, 600936, 684334, 733215, 751170, 837960, 977620, 1001560, 1019518, 1026501, 1173144, 1368668, 1466430, 1502340, 1529277, 1710835, 1955240, 2039036, 2053002, 2395169, 2548795, 2737336, 2932860, 3004680, 3058554, 3421670, 3568313, 4078072, 4106004, 4790338, 5097590, 5132505, 5865720, 6117108, 6843340, 7136626, 7185507, 7646385, 8212008, 9580676, 10195180, 10265010, 10704939, 11975845, 12234216, 13686680, 14273252, 14371014, 15292770, 17841565, 19161352, 20390360, 20530020, 21409878, 23951690, 24978191, 28546504, 28742028, 30585540, 35683130, 35927535, 41060040, 42819756, 47903380, 49956382, 53524695, 57484056, 61171080, 71366260, 71855070, 74934573, 85639512, 95806760, 99912764, 107049390, 124890955, 142732520, 143710140, 149869146, 174847337, 199825528, 214098780, 249781910, 287420280, 299738292, 349694674, 374672865, 428197560, 499563820, 524542011, 599476584, 699389348, 749345730, 874236685, 999127640, 1049084022, 1398778696, 1498691460, 1748473370, 2098168044, 2622710055, 2997382920, 3496946740, 4196336088, 5245420110, 6993893480, 10490840220, 20981680440]

約数ペア:

[(1, 20981680440), (2, 10490840220), (3, 6993893480), (4, 5245420110), (5, 4196336088), (6, 3496946740), (7, 2997382920), (8, 2622710055), (10, 2098168044), (12, 1748473370), (14, 1498691460), (15, 1398778696), (20, 1049084022), (21, 999127640), (24, 874236685), (28, 749345730), (30, 699389348), (35, 599476584), (40, 524542011), (42, 499563820), (49, 428197560), (56, 374672865), (60, 349694674), (70, 299738292), (73, 287420280), (84, 249781910), (98, 214098780), (105, 199825528), (120, 174847337), (140, 149869146), (146, 143710140), (147, 142732520), (168, 124890955), (196, 107049390), (210, 99912764), (219, 95806760), (245, 85639512), (280, 74934573), (292, 71855070), (294, 71366260), (343, 61171080), (365, 57484056), (392, 53524695), (420, 49956382), (438, 47903380), (490, 42819756), (511, 41060040), (584, 35927535), (588, 35683130), (686, 30585540), (730, 28742028), (735, 28546504), (840, 24978191), (876, 23951690), (980, 21409878), (1022, 20530020), (1029, 20390360), (1095, 19161352), (1176, 17841565), (1372, 15292770), (1460, 14371014), (1470, 14273252), (1533, 13686680), (1715, 12234216), (1752, 11975845), (1960, 10704939), (2044, 10265010), (2058, 10195180), (2190, 9580676), (2555, 8212008), (2744, 7646385), (2920, 7185507), (2940, 7136626), (3066, 6843340), (3430, 6117108), (3577, 5865720), (4088, 5132505), (4116, 5097590), (4380, 4790338), (5110, 4106004), (5145, 4078072), (5880, 3568313), (6132, 3421670), (6860, 3058554), (6983, 3004680), (7154, 2932860), (7665, 2737336), (8232, 2548795), (8760, 2395169), (10220, 2053002), (10290, 2039036), (10731, 1955240), (12264, 1710835), (13720, 1529277), (13966, 1502340), (14308, 1466430), (15330, 1368668), (17885, 1173144), (20440, 1026501), (20580, 1019518), (20949, 1001560), (21462, 977620), (25039, 837960), (27932, 751170), (28616, 733215), (30660, 684334), (34915, 600936), (35770, 586572), (41160, 509759), (41898, 500780), (42924, 488810), (48881, 429240), (50078, 418980), (53655, 391048), (55864, 375585), (61320, 342167), (69830, 300468), (71540, 293286), (75117, 279320), (83796, 250390), (85848, 244405), (97762, 214620), (100156, 209490), (104745, 200312), (107310, 195524), (125195, 167592), (139660, 150234), (143080, 146643)]