221591721

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{32843}}^1$

素因数の和:33032

約数の個数: 16

約数和(自身を含む): 320031936

約数和(自身を除く): 98440215

約数列:

[1, 3, 13, 39, 173, 519, 2249, 6747, 32843, 98529, 426959, 1280877, 5681839, 17045517, 73863907, 221591721]

約数ペア:

[(1, 221591721), (3, 73863907), (13, 17045517), (39, 5681839), (173, 1280877), (519, 426959), (2249, 98529), (6747, 32843)]