21809438

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{23251}}^1$

素因数の和:23327

約数の個数: 16

約数和(自身を含む): 37947264

約数和(自身を除く): 16137826

約数列:

[1, 2, 7, 14, 67, 134, 469, 938, 23251, 46502, 162757, 325514, 1557817, 3115634, 10904719, 21809438]

約数ペア:

[(1, 21809438), (2, 10904719), (7, 3115634), (14, 1557817), (67, 325514), (134, 162757), (469, 46502), (938, 23251)]