28209560

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{859}}^1$

素因数の和:1691

約数の個数: 32

約数和(自身を含む): 63622800

約数和(自身を除く): 35413240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 859, 1642, 1718, 3284, 3436, 4105, 4295, 6568, 6872, 8210, 8590, 16420, 17180, 32840, 34360, 705239, 1410478, 2820956, 3526195, 5641912, 7052390, 14104780, 28209560]

約数ペア:

[(1, 28209560), (2, 14104780), (4, 7052390), (5, 5641912), (8, 3526195), (10, 2820956), (20, 1410478), (40, 705239), (821, 34360), (859, 32840), (1642, 17180), (1718, 16420), (3284, 8590), (3436, 8210), (4105, 6872), (4295, 6568)]