205653680

素因数分解:

$2^4\times 5^1\times {\mathrm{2570671}}^1$

素因数の和:2570684

約数の個数: 20

約数和(自身を含む): 478144992

約数和(自身を除く): 272491312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2570671, 5141342, 10282684, 12853355, 20565368, 25706710, 41130736, 51413420, 102826840, 205653680]

約数ペア:

[(1, 205653680), (2, 102826840), (4, 51413420), (5, 41130736), (8, 25706710), (10, 20565368), (16, 12853355), (20, 10282684), (40, 5141342), (80, 2570671)]