208981520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{21589}}^1$

素因数の和:21624

約数の個数: 60

約数和(自身を含む): 534093420

約数和(自身を除く): 325111900

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2420, 4840, 9680, 21589, 43178, 86356, 107945, 172712, 215890, 237479, 345424, 431780, 474958, 863560, 949916, 1187395, 1727120, 1899832, 2374790, 2612269, 3799664, 4749580, 5224538, 9499160, 10449076, 13061345, 18998320, 20898152, 26122690, 41796304, 52245380, 104490760, 208981520]

約数ペア:

[(1, 208981520), (2, 104490760), (4, 52245380), (5, 41796304), (8, 26122690), (10, 20898152), (11, 18998320), (16, 13061345), (20, 10449076), (22, 9499160), (40, 5224538), (44, 4749580), (55, 3799664), (80, 2612269), (88, 2374790), (110, 1899832), (121, 1727120), (176, 1187395), (220, 949916), (242, 863560), (440, 474958), (484, 431780), (605, 345424), (880, 237479), (968, 215890), (1210, 172712), (1936, 107945), (2420, 86356), (4840, 43178), (9680, 21589)]