664451660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{8287}}^1$

素因数の和:8526

約数の個数: 48

約数和(自身を含む): 1475927040

約数和(自身を除く): 811475380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 211, 380, 422, 844, 1055, 2110, 4009, 4220, 8018, 8287, 16036, 16574, 20045, 33148, 40090, 41435, 80180, 82870, 157453, 165740, 314906, 629812, 787265, 1574530, 1748557, 3149060, 3497114, 6994228, 8742785, 17485570, 33222583, 34971140, 66445166, 132890332, 166112915, 332225830, 664451660]

約数ペア:

[(1, 664451660), (2, 332225830), (4, 166112915), (5, 132890332), (10, 66445166), (19, 34971140), (20, 33222583), (38, 17485570), (76, 8742785), (95, 6994228), (190, 3497114), (211, 3149060), (380, 1748557), (422, 1574530), (844, 787265), (1055, 629812), (2110, 314906), (4009, 165740), (4220, 157453), (8018, 82870), (8287, 80180), (16036, 41435), (16574, 40090), (20045, 33148)]