20853680

素因数分解:

$2^4\times 5^1\times {\mathrm{260671}}^1$

素因数の和:260684

約数の個数: 20

約数和(自身を含む): 48484992

約数和(自身を除く): 27631312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260671, 521342, 1042684, 1303355, 2085368, 2606710, 4170736, 5213420, 10426840, 20853680]

約数ペア:

[(1, 20853680), (2, 10426840), (4, 5213420), (5, 4170736), (8, 2606710), (10, 2085368), (16, 1303355), (20, 1042684), (40, 521342), (80, 260671)]