21556016

素因数分解:

$2^4\times {\mathrm{823}}^1\times {\mathrm{1637}}^1$

素因数の和:2468

約数の個数: 20

約数和(自身を含む): 41841072

約数和(自身を除く): 20285056

約数列:

[1, 2, 4, 8, 16, 823, 1637, 1646, 3274, 3292, 6548, 6584, 13096, 13168, 26192, 1347251, 2694502, 5389004, 10778008, 21556016]

約数ペア:

[(1, 21556016), (2, 10778008), (4, 5389004), (8, 2694502), (16, 1347251), (823, 26192), (1637, 13168), (1646, 13096), (3274, 6584), (3292, 6548)]