1651640

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 3754080

約数和(自身を除く): 2102440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 263, 314, 526, 628, 785, 1052, 1256, 1315, 1570, 2104, 2630, 3140, 5260, 6280, 10520, 41291, 82582, 165164, 206455, 330328, 412910, 825820, 1651640]

約数ペア:

[(1, 1651640), (2, 825820), (4, 412910), (5, 330328), (8, 206455), (10, 165164), (20, 82582), (40, 41291), (157, 10520), (263, 6280), (314, 5260), (526, 3140), (628, 2630), (785, 2104), (1052, 1570), (1256, 1315)]