13825640

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{821}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 31219560

約数和(自身を除く): 17393920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 821, 842, 1642, 1684, 2105, 3284, 3368, 4105, 4210, 6568, 8210, 8420, 16420, 16840, 32840, 345641, 691282, 1382564, 1728205, 2765128, 3456410, 6912820, 13825640]

約数ペア:

[(1, 13825640), (2, 6912820), (4, 3456410), (5, 2765128), (8, 1728205), (10, 1382564), (20, 691282), (40, 345641), (421, 32840), (821, 16840), (842, 16420), (1642, 8420), (1684, 8210), (2105, 6568), (3284, 4210), (3368, 4105)]