90719960

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{8369}}^1$

素因数の和:8651

約数の個数: 32

約数和(自身を含む): 204897600

約数和(自身を除く): 114177640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 8369, 10840, 16738, 33476, 41845, 66952, 83690, 167380, 334760, 2267999, 4535998, 9071996, 11339995, 18143992, 22679990, 45359980, 90719960]

約数ペア:

[(1, 90719960), (2, 45359980), (4, 22679990), (5, 18143992), (8, 11339995), (10, 9071996), (20, 4535998), (40, 2267999), (271, 334760), (542, 167380), (1084, 83690), (1355, 66952), (2168, 41845), (2710, 33476), (5420, 16738), (8369, 10840)]