39992980

素因数分解:

$2^2\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{1601}}^1$

素因数の和:2859

約数の個数: 24

約数和(自身を含む): 84105000

約数和(自身を除く): 44112020

約数列:

[1, 2, 4, 5, 10, 20, 1249, 1601, 2498, 3202, 4996, 6245, 6404, 8005, 12490, 16010, 24980, 32020, 1999649, 3999298, 7998596, 9998245, 19996490, 39992980]

約数ペア:

[(1, 39992980), (2, 19996490), (4, 9998245), (5, 7998596), (10, 3999298), (20, 1999649), (1249, 32020), (1601, 24980), (2498, 16010), (3202, 12490), (4996, 8005), (6245, 6404)]