20016563

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:554

約数の個数: 16

約数和(自身を含む): 23521536

約数和(自身を除く): 3504973

約数列:

[1, 7, 53, 163, 331, 371, 1141, 2317, 8639, 17543, 53953, 60473, 122801, 377671, 2859509, 20016563]

約数ペア:

[(1, 20016563), (7, 2859509), (53, 377671), (163, 122801), (331, 60473), (371, 53953), (1141, 17543), (2317, 8639)]