20171864045

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1620881}}^1$

素因数の和:1621036

約数の個数: 16

約数和(自身を含む): 25674770880

約数和(自身を除く): 5502906835

約数列:

[1, 5, 19, 95, 131, 655, 2489, 12445, 1620881, 8104405, 30796739, 153983695, 212335411, 1061677055, 4034372809, 20171864045]

約数ペア:

[(1, 20171864045), (5, 4034372809), (19, 1061677055), (95, 212335411), (131, 153983695), (655, 30796739), (2489, 8104405), (12445, 1620881)]