18784040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3881}}^1$

素因数の和:3914

約数の個数: 48

約数和(自身を含む): 46467540

約数和(自身を除く): 27683500

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 3881, 4840, 7762, 15524, 19405, 31048, 38810, 42691, 77620, 85382, 155240, 170764, 213455, 341528, 426910, 469601, 853820, 939202, 1707640, 1878404, 2348005, 3756808, 4696010, 9392020, 18784040]

約数ペア:

[(1, 18784040), (2, 9392020), (4, 4696010), (5, 3756808), (8, 2348005), (10, 1878404), (11, 1707640), (20, 939202), (22, 853820), (40, 469601), (44, 426910), (55, 341528), (88, 213455), (110, 170764), (121, 155240), (220, 85382), (242, 77620), (440, 42691), (484, 38810), (605, 31048), (968, 19405), (1210, 15524), (2420, 7762), (3881, 4840)]