20280491312

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{1977427}}^1$

素因数の和:1978076

約数の個数: 20

約数和(自身を含む): 39354772056

約数和(自身を除く): 19074280744

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2564, 5128, 10256, 1977427, 3954854, 7909708, 15819416, 31638832, 1267530707, 2535061414, 5070122828, 10140245656, 20280491312]

約数ペア:

[(1, 20280491312), (2, 10140245656), (4, 5070122828), (8, 2535061414), (16, 1267530707), (641, 31638832), (1282, 15819416), (2564, 7909708), (5128, 3954854), (10256, 1977427)]