20400208

素因数分解:

$2^4\times {\mathrm{821}}^1\times {\mathrm{1553}}^1$

素因数の和:2382

約数の個数: 20

約数和(自身を含む): 39599028

約数和(自身を除く): 19198820

約数列:

[1, 2, 4, 8, 16, 821, 1553, 1642, 3106, 3284, 6212, 6568, 12424, 13136, 24848, 1275013, 2550026, 5100052, 10200104, 20400208]

約数ペア:

[(1, 20400208), (2, 10200104), (4, 5100052), (8, 2550026), (16, 1275013), (821, 24848), (1553, 13136), (1642, 12424), (3106, 6568), (3284, 6212)]