18798560

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{971}}^1$

素因数の和:1008

約数の個数: 72

約数和(自身を含む): 48866328

約数和(自身を除く): 30067768

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 971, 1210, 1760, 1936, 1942, 2420, 3872, 3884, 4840, 4855, 7768, 9680, 9710, 10681, 15536, 19360, 19420, 21362, 31072, 38840, 42724, 53405, 77680, 85448, 106810, 117491, 155360, 170896, 213620, 234982, 341792, 427240, 469964, 587455, 854480, 939928, 1174910, 1708960, 1879856, 2349820, 3759712, 4699640, 9399280, 18798560]

約数ペア:

[(1, 18798560), (2, 9399280), (4, 4699640), (5, 3759712), (8, 2349820), (10, 1879856), (11, 1708960), (16, 1174910), (20, 939928), (22, 854480), (32, 587455), (40, 469964), (44, 427240), (55, 341792), (80, 234982), (88, 213620), (110, 170896), (121, 155360), (160, 117491), (176, 106810), (220, 85448), (242, 77680), (352, 53405), (440, 42724), (484, 38840), (605, 31072), (880, 21362), (968, 19420), (971, 19360), (1210, 15536), (1760, 10681), (1936, 9710), (1942, 9680), (2420, 7768), (3872, 4855), (3884, 4840)]