217081640

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{102397}}^1$

素因数の和:102461

約数の個数: 32

約数和(自身を含む): 497654280

約数和(自身を除く): 280572640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 102397, 204794, 409588, 511985, 819176, 1023970, 2047940, 4095880, 5427041, 10854082, 21708164, 27135205, 43416328, 54270410, 108540820, 217081640]

約数ペア:

[(1, 217081640), (2, 108540820), (4, 54270410), (5, 43416328), (8, 27135205), (10, 21708164), (20, 10854082), (40, 5427041), (53, 4095880), (106, 2047940), (212, 1023970), (265, 819176), (424, 511985), (530, 409588), (1060, 204794), (2120, 102397)]