21250871960

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4965157}}^1$

素因数の和:4965275

約数の個数: 32

約数和(自身を含む): 48261335760

約数和(自身を除く): 27010463800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4965157, 9930314, 19860628, 24825785, 39721256, 49651570, 99303140, 198606280, 531271799, 1062543598, 2125087196, 2656358995, 4250174392, 5312717990, 10625435980, 21250871960]

約数ペア:

[(1, 21250871960), (2, 10625435980), (4, 5312717990), (5, 4250174392), (8, 2656358995), (10, 2125087196), (20, 1062543598), (40, 531271799), (107, 198606280), (214, 99303140), (428, 49651570), (535, 39721256), (856, 24825785), (1070, 19860628), (2140, 9930314), (4280, 4965157)]