20875960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10651}}^1$

素因数の和:10676

約数の個数: 48

約数和(自身を含む): 54644760

約数和(自身を除く): 33768800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10651, 21302, 42604, 53255, 74557, 85208, 106510, 149114, 213020, 298228, 372785, 426040, 521899, 596456, 745570, 1043798, 1491140, 2087596, 2609495, 2982280, 4175192, 5218990, 10437980, 20875960]

約数ペア:

[(1, 20875960), (2, 10437980), (4, 5218990), (5, 4175192), (7, 2982280), (8, 2609495), (10, 2087596), (14, 1491140), (20, 1043798), (28, 745570), (35, 596456), (40, 521899), (49, 426040), (56, 372785), (70, 298228), (98, 213020), (140, 149114), (196, 106510), (245, 85208), (280, 74557), (392, 53255), (490, 42604), (980, 21302), (1960, 10651)]