205939640

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{6271}}^1$

素因数の和:7103

約数の個数: 32

約数和(自身を含む): 464002560

約数和(自身を除く): 258062920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 3284, 4105, 6271, 6568, 8210, 12542, 16420, 25084, 31355, 32840, 50168, 62710, 125420, 250840, 5148491, 10296982, 20593964, 25742455, 41187928, 51484910, 102969820, 205939640]

約数ペア:

[(1, 205939640), (2, 102969820), (4, 51484910), (5, 41187928), (8, 25742455), (10, 20593964), (20, 10296982), (40, 5148491), (821, 250840), (1642, 125420), (3284, 62710), (4105, 50168), (6271, 32840), (6568, 31355), (8210, 25084), (12542, 16420)]