39945560

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12641}}^1$

素因数の和:12731

約数の個数: 32

約数和(自身を含む): 91022400

約数和(自身を除く): 51076840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 12641, 25282, 50564, 63205, 101128, 126410, 252820, 505640, 998639, 1997278, 3994556, 4993195, 7989112, 9986390, 19972780, 39945560]

約数ペア:

[(1, 39945560), (2, 19972780), (4, 9986390), (5, 7989112), (8, 4993195), (10, 3994556), (20, 1997278), (40, 998639), (79, 505640), (158, 252820), (316, 126410), (395, 101128), (632, 63205), (790, 50564), (1580, 25282), (3160, 12641)]