81358991

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:479

約数の個数: 24

約数和(自身を含む): 99851136

約数和(自身を除く): 18492145

約数列:

[1, 7, 17, 119, 131, 289, 307, 917, 2023, 2149, 2227, 5219, 15589, 36533, 37859, 40217, 88723, 265013, 281519, 621061, 683689, 4785823, 11622713, 81358991]

約数ペア:

[(1, 81358991), (7, 11622713), (17, 4785823), (119, 683689), (131, 621061), (289, 281519), (307, 265013), (917, 88723), (2023, 40217), (2149, 37859), (2227, 36533), (5219, 15589)]