20404822

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{4099}}^1$

素因数の和:4251

約数の個数: 16

約数和(自身を含む): 32472000

約数和(自身を除く): 12067178

約数列:

[1, 2, 19, 38, 131, 262, 2489, 4099, 4978, 8198, 77881, 155762, 536969, 1073938, 10202411, 20404822]

約数ペア:

[(1, 20404822), (2, 10202411), (19, 1073938), (38, 536969), (131, 155762), (262, 77881), (2489, 8198), (4099, 4978)]