20349640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16411}}^1$

素因数の和:16453

約数の個数: 32

約数和(自身を含む): 47266560

約数和(自身を除く): 26916920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16411, 32822, 65644, 82055, 131288, 164110, 328220, 508741, 656440, 1017482, 2034964, 2543705, 4069928, 5087410, 10174820, 20349640]

約数ペア:

[(1, 20349640), (2, 10174820), (4, 5087410), (5, 4069928), (8, 2543705), (10, 2034964), (20, 1017482), (31, 656440), (40, 508741), (62, 328220), (124, 164110), (155, 131288), (248, 82055), (310, 65644), (620, 32822), (1240, 16411)]