87912680

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{2677}}^1$

素因数の和:3509

約数の個数: 32

約数和(自身を含む): 198118440

約数和(自身を除く): 110205760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 2677, 3284, 4105, 5354, 6568, 8210, 10708, 13385, 16420, 21416, 26770, 32840, 53540, 107080, 2197817, 4395634, 8791268, 10989085, 17582536, 21978170, 43956340, 87912680]

約数ペア:

[(1, 87912680), (2, 43956340), (4, 21978170), (5, 17582536), (8, 10989085), (10, 8791268), (20, 4395634), (40, 2197817), (821, 107080), (1642, 53540), (2677, 32840), (3284, 26770), (4105, 21416), (5354, 16420), (6568, 13385), (8210, 10708)]