868780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{359}}^1$

素因数の和:390

約数の個数: 36

約数和(自身を含む): 2010960

約数和(自身を除く): 1142180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 359, 484, 605, 718, 1210, 1436, 1795, 2420, 3590, 3949, 7180, 7898, 15796, 19745, 39490, 43439, 78980, 86878, 173756, 217195, 434390, 868780]

約数ペア:

[(1, 868780), (2, 434390), (4, 217195), (5, 173756), (10, 86878), (11, 78980), (20, 43439), (22, 39490), (44, 19745), (55, 15796), (110, 7898), (121, 7180), (220, 3949), (242, 3590), (359, 2420), (484, 1795), (605, 1436), (718, 1210)]