64780180

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{6491}}^1$

素因数の和:6999

約数の個数: 24

約数和(自身を含む): 136332000

約数和(自身を除く): 71551820

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 6491, 9980, 12982, 25964, 32455, 64910, 129820, 3239009, 6478018, 12956036, 16195045, 32390090, 64780180]

約数ペア:

[(1, 64780180), (2, 32390090), (4, 16195045), (5, 12956036), (10, 6478018), (20, 3239009), (499, 129820), (998, 64910), (1996, 32455), (2495, 25964), (4990, 12982), (6491, 9980)]