8128780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3359}}^1$

素因数の和:3390

約数の個数: 36

約数和(自身を含む): 18768960

約数和(自身を除く): 10640180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 3359, 6718, 13436, 16795, 33590, 36949, 67180, 73898, 147796, 184745, 369490, 406439, 738980, 812878, 1625756, 2032195, 4064390, 8128780]

約数ペア:

[(1, 8128780), (2, 4064390), (4, 2032195), (5, 1625756), (10, 812878), (11, 738980), (20, 406439), (22, 369490), (44, 184745), (55, 147796), (110, 73898), (121, 67180), (220, 36949), (242, 33590), (484, 16795), (605, 13436), (1210, 6718), (2420, 3359)]