20783615

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{821}}^1$

素因数の和:970

約数の個数: 16

約数和(自身を含む): 25685856

約数和(自身を除く): 4902241

約数列:

[1, 5, 61, 83, 305, 415, 821, 4105, 5063, 25315, 50081, 68143, 250405, 340715, 4156723, 20783615]

約数ペア:

[(1, 20783615), (5, 4156723), (61, 340715), (83, 250405), (305, 68143), (415, 50081), (821, 25315), (4105, 5063)]