18965540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 46453176

約数和(自身を除く): 27487636

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 121, 170, 187, 220, 242, 340, 374, 461, 484, 605, 748, 922, 935, 1210, 1844, 1870, 2057, 2305, 2420, 3740, 4114, 4610, 5071, 7837, 8228, 9220, 10142, 10285, 15674, 20284, 20570, 25355, 31348, 39185, 41140, 50710, 55781, 78370, 86207, 101420, 111562, 156740, 172414, 223124, 278905, 344828, 431035, 557810, 862070, 948277, 1115620, 1724140, 1896554, 3793108, 4741385, 9482770, 18965540]

約数ペア:

[(1, 18965540), (2, 9482770), (4, 4741385), (5, 3793108), (10, 1896554), (11, 1724140), (17, 1115620), (20, 948277), (22, 862070), (34, 557810), (44, 431035), (55, 344828), (68, 278905), (85, 223124), (110, 172414), (121, 156740), (170, 111562), (187, 101420), (220, 86207), (242, 78370), (340, 55781), (374, 50710), (461, 41140), (484, 39185), (605, 31348), (748, 25355), (922, 20570), (935, 20284), (1210, 15674), (1844, 10285), (1870, 10142), (2057, 9220), (2305, 8228), (2420, 7837), (3740, 5071), (4114, 4610)]