21891240

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:121

約数の個数: 288

約数和(自身を含む): 88831080

約数和(自身を除く): 66939840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 30, 34, 35, 36, 40, 42, 45, 49, 51, 56, 60, 63, 68, 70, 72, 73, 84, 85, 90, 98, 102, 105, 119, 120, 126, 136, 140, 146, 147, 153, 168, 170, 180, 196, 204, 210, 219, 238, 245, 252, 255, 280, 292, 294, 306, 315, 340, 357, 360, 365, 392, 408, 420, 438, 441, 476, 490, 504, 510, 511, 584, 588, 595, 612, 630, 657, 680, 714, 730, 735, 765, 833, 840, 876, 882, 952, 980, 1020, 1022, 1071, 1095, 1176, 1190, 1224, 1241, 1260, 1314, 1428, 1460, 1470, 1530, 1533, 1666, 1752, 1764, 1785, 1960, 2040, 2044, 2142, 2190, 2205, 2380, 2482, 2499, 2520, 2555, 2628, 2856, 2920, 2940, 3060, 3066, 3285, 3332, 3528, 3570, 3577, 3723, 4088, 4165, 4284, 4380, 4410, 4599, 4760, 4964, 4998, 5110, 5256, 5355, 5880, 6120, 6132, 6205, 6570, 6664, 7140, 7154, 7446, 7497, 7665, 8330, 8568, 8687, 8760, 8820, 9198, 9928, 9996, 10220, 10710, 10731, 11169, 12264, 12410, 12495, 13140, 14280, 14308, 14892, 14994, 15330, 16660, 17374, 17640, 17885, 18396, 18615, 19992, 20440, 21420, 21462, 22338, 22995, 24820, 24990, 26061, 26280, 28616, 29784, 29988, 30660, 32193, 33320, 34748, 35770, 36792, 37230, 37485, 42840, 42924, 43435, 44676, 45990, 49640, 49980, 52122, 53655, 55845, 59976, 60809, 61320, 64386, 69496, 71540, 74460, 74970, 78183, 85848, 86870, 89352, 91980, 99960, 104244, 107310, 111690, 121618, 128772, 130305, 143080, 148920, 149940, 156366, 160965, 173740, 182427, 183960, 208488, 214620, 223380, 243236, 257544, 260610, 299880, 304045, 312732, 321930, 347480, 364854, 390915, 429240, 446760, 486472, 521220, 547281, 608090, 625464, 643860, 729708, 781830, 912135, 1042440, 1094562, 1216180, 1287720, 1459416, 1563660, 1824270, 2189124, 2432360, 2736405, 3127320, 3648540, 4378248, 5472810, 7297080, 10945620, 21891240]

約数ペア:

[(1, 21891240), (2, 10945620), (3, 7297080), (4, 5472810), (5, 4378248), (6, 3648540), (7, 3127320), (8, 2736405), (9, 2432360), (10, 2189124), (12, 1824270), (14, 1563660), (15, 1459416), (17, 1287720), (18, 1216180), (20, 1094562), (21, 1042440), (24, 912135), (28, 781830), (30, 729708), (34, 643860), (35, 625464), (36, 608090), (40, 547281), (42, 521220), (45, 486472), (49, 446760), (51, 429240), (56, 390915), (60, 364854), (63, 347480), (68, 321930), (70, 312732), (72, 304045), (73, 299880), (84, 260610), (85, 257544), (90, 243236), (98, 223380), (102, 214620), (105, 208488), (119, 183960), (120, 182427), (126, 173740), (136, 160965), (140, 156366), (146, 149940), (147, 148920), (153, 143080), (168, 130305), (170, 128772), (180, 121618), (196, 111690), (204, 107310), (210, 104244), (219, 99960), (238, 91980), (245, 89352), (252, 86870), (255, 85848), (280, 78183), (292, 74970), (294, 74460), (306, 71540), (315, 69496), (340, 64386), (357, 61320), (360, 60809), (365, 59976), (392, 55845), (408, 53655), (420, 52122), (438, 49980), (441, 49640), (476, 45990), (490, 44676), (504, 43435), (510, 42924), (511, 42840), (584, 37485), (588, 37230), (595, 36792), (612, 35770), (630, 34748), (657, 33320), (680, 32193), (714, 30660), (730, 29988), (735, 29784), (765, 28616), (833, 26280), (840, 26061), (876, 24990), (882, 24820), (952, 22995), (980, 22338), (1020, 21462), (1022, 21420), (1071, 20440), (1095, 19992), (1176, 18615), (1190, 18396), (1224, 17885), (1241, 17640), (1260, 17374), (1314, 16660), (1428, 15330), (1460, 14994), (1470, 14892), (1530, 14308), (1533, 14280), (1666, 13140), (1752, 12495), (1764, 12410), (1785, 12264), (1960, 11169), (2040, 10731), (2044, 10710), (2142, 10220), (2190, 9996), (2205, 9928), (2380, 9198), (2482, 8820), (2499, 8760), (2520, 8687), (2555, 8568), (2628, 8330), (2856, 7665), (2920, 7497), (2940, 7446), (3060, 7154), (3066, 7140), (3285, 6664), (3332, 6570), (3528, 6205), (3570, 6132), (3577, 6120), (3723, 5880), (4088, 5355), (4165, 5256), (4284, 5110), (4380, 4998), (4410, 4964), (4599, 4760)]