19883880

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:78

約数の個数: 240

約数和(自身を含む): 74683620

約数和(自身を除く): 54799740

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 19, 20, 24, 27, 30, 34, 36, 38, 40, 45, 51, 54, 57, 60, 68, 72, 76, 81, 85, 90, 95, 102, 108, 114, 120, 135, 136, 152, 153, 162, 170, 171, 180, 190, 204, 216, 228, 255, 270, 285, 306, 323, 324, 340, 342, 360, 361, 380, 405, 408, 456, 459, 510, 513, 540, 570, 612, 646, 648, 680, 684, 722, 760, 765, 810, 855, 918, 969, 1020, 1026, 1080, 1083, 1140, 1224, 1292, 1368, 1377, 1444, 1530, 1539, 1615, 1620, 1710, 1805, 1836, 1938, 2040, 2052, 2166, 2280, 2295, 2565, 2584, 2754, 2888, 2907, 3060, 3078, 3230, 3240, 3249, 3420, 3610, 3672, 3876, 4104, 4332, 4590, 4845, 5130, 5415, 5508, 5814, 6120, 6137, 6156, 6460, 6498, 6840, 6885, 7220, 7695, 7752, 8664, 8721, 9180, 9690, 9747, 10260, 10830, 11016, 11628, 12274, 12312, 12920, 12996, 13770, 14440, 14535, 15390, 16245, 17442, 18360, 18411, 19380, 19494, 20520, 21660, 23256, 24548, 25992, 26163, 27540, 29070, 29241, 30685, 30780, 32490, 34884, 36822, 38760, 38988, 43320, 43605, 48735, 49096, 52326, 55080, 55233, 58140, 58482, 61370, 61560, 64980, 69768, 73644, 77976, 87210, 92055, 97470, 104652, 110466, 116280, 116964, 122740, 129960, 130815, 146205, 147288, 165699, 174420, 184110, 194940, 209304, 220932, 233928, 245480, 261630, 276165, 292410, 331398, 348840, 368220, 389880, 441864, 497097, 523260, 552330, 584820, 662796, 736440, 828495, 994194, 1046520, 1104660, 1169640, 1325592, 1656990, 1988388, 2209320, 2485485, 3313980, 3976776, 4970970, 6627960, 9941940, 19883880]

約数ペア:

[(1, 19883880), (2, 9941940), (3, 6627960), (4, 4970970), (5, 3976776), (6, 3313980), (8, 2485485), (9, 2209320), (10, 1988388), (12, 1656990), (15, 1325592), (17, 1169640), (18, 1104660), (19, 1046520), (20, 994194), (24, 828495), (27, 736440), (30, 662796), (34, 584820), (36, 552330), (38, 523260), (40, 497097), (45, 441864), (51, 389880), (54, 368220), (57, 348840), (60, 331398), (68, 292410), (72, 276165), (76, 261630), (81, 245480), (85, 233928), (90, 220932), (95, 209304), (102, 194940), (108, 184110), (114, 174420), (120, 165699), (135, 147288), (136, 146205), (152, 130815), (153, 129960), (162, 122740), (170, 116964), (171, 116280), (180, 110466), (190, 104652), (204, 97470), (216, 92055), (228, 87210), (255, 77976), (270, 73644), (285, 69768), (306, 64980), (323, 61560), (324, 61370), (340, 58482), (342, 58140), (360, 55233), (361, 55080), (380, 52326), (405, 49096), (408, 48735), (456, 43605), (459, 43320), (510, 38988), (513, 38760), (540, 36822), (570, 34884), (612, 32490), (646, 30780), (648, 30685), (680, 29241), (684, 29070), (722, 27540), (760, 26163), (765, 25992), (810, 24548), (855, 23256), (918, 21660), (969, 20520), (1020, 19494), (1026, 19380), (1080, 18411), (1083, 18360), (1140, 17442), (1224, 16245), (1292, 15390), (1368, 14535), (1377, 14440), (1444, 13770), (1530, 12996), (1539, 12920), (1615, 12312), (1620, 12274), (1710, 11628), (1805, 11016), (1836, 10830), (1938, 10260), (2040, 9747), (2052, 9690), (2166, 9180), (2280, 8721), (2295, 8664), (2565, 7752), (2584, 7695), (2754, 7220), (2888, 6885), (2907, 6840), (3060, 6498), (3078, 6460), (3230, 6156), (3240, 6137), (3249, 6120), (3420, 5814), (3610, 5508), (3672, 5415), (3876, 5130), (4104, 4845), (4332, 4590)]