21308021

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{1307}}^1$

素因数の和:1468

約数の個数: 16

約数和(自身を含む): 25992576

約数和(自身を除く): 4684555

約数列:

[1, 7, 17, 119, 137, 959, 1307, 2329, 9149, 16303, 22219, 155533, 179059, 1253413, 3044003, 21308021]

約数ペア:

[(1, 21308021), (7, 3044003), (17, 1253413), (119, 179059), (137, 155533), (959, 22219), (1307, 16303), (2329, 9149)]