39900580

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28099}}^1$

素因数の和:28179

約数の個数: 24

約数和(自身を含む): 84974400

約数和(自身を除く): 45073820

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 28099, 56198, 112396, 140495, 280990, 561980, 1995029, 3990058, 7980116, 9975145, 19950290, 39900580]

約数ペア:

[(1, 39900580), (2, 19950290), (4, 9975145), (5, 7980116), (10, 3990058), (20, 1995029), (71, 561980), (142, 280990), (284, 140495), (355, 112396), (710, 56198), (1420, 28099)]