28491540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{881}}^1$

素因数の和:918

約数の個数: 144

約数和(自身を含む): 101352384

約数和(自身を除く): 72860844

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 49, 55, 60, 66, 70, 77, 84, 98, 105, 110, 132, 140, 147, 154, 165, 196, 210, 220, 231, 245, 294, 308, 330, 385, 420, 462, 490, 539, 588, 660, 735, 770, 881, 924, 980, 1078, 1155, 1470, 1540, 1617, 1762, 2156, 2310, 2643, 2695, 2940, 3234, 3524, 4405, 4620, 5286, 5390, 6167, 6468, 8085, 8810, 9691, 10572, 10780, 12334, 13215, 16170, 17620, 18501, 19382, 24668, 26430, 29073, 30835, 32340, 37002, 38764, 43169, 48455, 52860, 58146, 61670, 67837, 74004, 86338, 92505, 96910, 116292, 123340, 129507, 135674, 145365, 172676, 185010, 193820, 203511, 215845, 259014, 271348, 290730, 339185, 370020, 407022, 431690, 474859, 518028, 581460, 647535, 678370, 814044, 863380, 949718, 1017555, 1295070, 1356740, 1424577, 1899436, 2035110, 2374295, 2590140, 2849154, 4070220, 4748590, 5698308, 7122885, 9497180, 14245770, 28491540]

約数ペア:

[(1, 28491540), (2, 14245770), (3, 9497180), (4, 7122885), (5, 5698308), (6, 4748590), (7, 4070220), (10, 2849154), (11, 2590140), (12, 2374295), (14, 2035110), (15, 1899436), (20, 1424577), (21, 1356740), (22, 1295070), (28, 1017555), (30, 949718), (33, 863380), (35, 814044), (42, 678370), (44, 647535), (49, 581460), (55, 518028), (60, 474859), (66, 431690), (70, 407022), (77, 370020), (84, 339185), (98, 290730), (105, 271348), (110, 259014), (132, 215845), (140, 203511), (147, 193820), (154, 185010), (165, 172676), (196, 145365), (210, 135674), (220, 129507), (231, 123340), (245, 116292), (294, 96910), (308, 92505), (330, 86338), (385, 74004), (420, 67837), (462, 61670), (490, 58146), (539, 52860), (588, 48455), (660, 43169), (735, 38764), (770, 37002), (881, 32340), (924, 30835), (980, 29073), (1078, 26430), (1155, 24668), (1470, 19382), (1540, 18501), (1617, 17620), (1762, 16170), (2156, 13215), (2310, 12334), (2643, 10780), (2695, 10572), (2940, 9691), (3234, 8810), (3524, 8085), (4405, 6468), (4620, 6167), (5286, 5390)]