642890545

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{13451}}^1$

素因数の和:13557

約数の個数: 24

約数和(自身を含む): 858775680

約数和(自身を除く): 215885135

約数列:

[1, 5, 11, 55, 79, 121, 395, 605, 869, 4345, 9559, 13451, 47795, 67255, 147961, 739805, 1062629, 1627571, 5313145, 8137855, 11688919, 58444595, 128578109, 642890545]

約数ペア:

[(1, 642890545), (5, 128578109), (11, 58444595), (55, 11688919), (79, 8137855), (121, 5313145), (395, 1627571), (605, 1062629), (869, 739805), (4345, 147961), (9559, 67255), (13451, 47795)]