21089522

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1\times {\mathrm{977}}^1$

素因数の和:1273

約数の個数: 16

約数和(自身を含む): 32532192

約数和(自身を除く): 11442670

約数列:

[1, 2, 43, 86, 251, 502, 977, 1954, 10793, 21586, 42011, 84022, 245227, 490454, 10544761, 21089522]

約数ペア:

[(1, 21089522), (2, 10544761), (43, 490454), (86, 245227), (251, 84022), (502, 42011), (977, 21586), (1954, 10793)]