20889218405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{12251741}}^1$

素因数の和:12251788

約数の個数: 16

約数和(自身を含む): 28228013568

約数和(自身を除く): 7338795163

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 12251741, 61258705, 134769151, 379803971, 673845755, 1899019855, 4177843681, 20889218405]

約数ペア:

[(1, 20889218405), (5, 4177843681), (11, 1899019855), (31, 673845755), (55, 379803971), (155, 134769151), (341, 61258705), (1705, 12251741)]