20404587

素因数分解:

$3^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{4243}}^1$

素因数の和:4482

約数の個数: 16

約数和(自身を含む): 31235840

約数和(自身を除く): 10831253

約数列:

[1, 3, 7, 21, 229, 687, 1603, 4243, 4809, 12729, 29701, 89103, 971647, 2914941, 6801529, 20404587]

約数ペア:

[(1, 20404587), (3, 6801529), (7, 2914941), (21, 971647), (229, 89103), (687, 29701), (1603, 12729), (4243, 4809)]