21808501

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8971}}^1$

素因数の和:9012

約数の個数: 16

約数和(自身を含む): 27131328

約数和(自身を除く): 5322827

約数列:

[1, 11, 13, 17, 143, 187, 221, 2431, 8971, 98681, 116623, 152507, 1282853, 1677577, 1982591, 21808501]

約数ペア:

[(1, 21808501), (11, 1982591), (13, 1677577), (17, 1282853), (143, 152507), (187, 116623), (221, 98681), (2431, 8971)]