21787444796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{972133}}^1$

素因数の和:972581

約数の個数: 24

約数和(自身を含む): 41156265024

約数和(自身を除く): 19368820228

約数列:

[1, 2, 4, 13, 26, 52, 431, 862, 1724, 5603, 11206, 22412, 972133, 1944266, 3888532, 12637729, 25275458, 50550916, 418989323, 837978646, 1675957292, 5446861199, 10893722398, 21787444796]

約数ペア:

[(1, 21787444796), (2, 10893722398), (4, 5446861199), (13, 1675957292), (26, 837978646), (52, 418989323), (431, 50550916), (862, 25275458), (1724, 12637729), (5603, 3888532), (11206, 1944266), (22412, 972133)]