21520508

素因数分解:

$2^2\times {\mathrm{137}}^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 38323152

約数和(自身を除く): 16802644

約数列:

[1, 2, 4, 137, 173, 227, 274, 346, 454, 548, 692, 908, 23701, 31099, 39271, 47402, 62198, 78542, 94804, 124396, 157084, 5380127, 10760254, 21520508]

約数ペア:

[(1, 21520508), (2, 10760254), (4, 5380127), (137, 157084), (173, 124396), (227, 94804), (274, 78542), (346, 62198), (454, 47402), (548, 39271), (692, 31099), (908, 23701)]