21609289

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{983}}^1$

素因数の和:1104

約数の個数: 16

約数和(自身を含む): 24796800

約数和(自身を除く): 3187511

約数列:

[1, 13, 19, 89, 247, 983, 1157, 1691, 12779, 18677, 21983, 87487, 242801, 1137331, 1662253, 21609289]

約数ペア:

[(1, 21609289), (13, 1662253), (19, 1137331), (89, 242801), (247, 87487), (983, 21983), (1157, 18677), (1691, 12779)]