40648540

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{4073}}^1$

素因数の和:4581

約数の個数: 24

約数和(自身を含む): 85554000

約数和(自身を除く): 44905460

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4073, 4990, 8146, 9980, 16292, 20365, 40730, 81460, 2032427, 4064854, 8129708, 10162135, 20324270, 40648540]

約数ペア:

[(1, 40648540), (2, 20324270), (4, 10162135), (5, 8129708), (10, 4064854), (20, 2032427), (499, 81460), (998, 40730), (1996, 20365), (2495, 16292), (4073, 9980), (4990, 8146)]