21399434

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80449}}^1$

素因数の和:80477

約数の個数: 16

約数和(自身を含む): 38616000

約数和(自身を除く): 17216566

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80449, 160898, 563143, 1126286, 1528531, 3057062, 10699717, 21399434]

約数ペア:

[(1, 21399434), (2, 10699717), (7, 3057062), (14, 1528531), (19, 1126286), (38, 563143), (133, 160898), (266, 80449)]