20171888905

素因数分解:

$5^1\times 7^1\times {\mathrm{137}}^2\times {\mathrm{30707}}^1$

素因数の和:30993

約数の個数: 24

約数和(自身を含む): 27868615488

約数和(自身を除く): 7696726583

約数列:

[1, 5, 7, 35, 137, 685, 959, 4795, 18769, 30707, 93845, 131383, 153535, 214949, 656915, 1074745, 4206859, 21034295, 29448013, 147240065, 576339683, 2881698415, 4034377781, 20171888905]

約数ペア:

[(1, 20171888905), (5, 4034377781), (7, 2881698415), (35, 576339683), (137, 147240065), (685, 29448013), (959, 21034295), (4795, 4206859), (18769, 1074745), (30707, 656915), (93845, 214949), (131383, 153535)]