66591640

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{2957}}^1$

素因数の和:3531

約数の個数: 32

約数和(自身を含む): 150148080

約数和(自身を除く): 83556440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 1126, 2252, 2815, 2957, 4504, 5630, 5914, 11260, 11828, 14785, 22520, 23656, 29570, 59140, 118280, 1664791, 3329582, 6659164, 8323955, 13318328, 16647910, 33295820, 66591640]

約数ペア:

[(1, 66591640), (2, 33295820), (4, 16647910), (5, 13318328), (8, 8323955), (10, 6659164), (20, 3329582), (40, 1664791), (563, 118280), (1126, 59140), (2252, 29570), (2815, 23656), (2957, 22520), (4504, 14785), (5630, 11828), (5914, 11260)]