20778374

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1\times {\mathrm{787}}^1$

素因数の和:1139

約数の個数: 16

約数和(自身を含む): 32036928

約数和(自身を除く): 11258554

約数列:

[1, 2, 43, 86, 307, 614, 787, 1574, 13201, 26402, 33841, 67682, 241609, 483218, 10389187, 20778374]

約数ペア:

[(1, 20778374), (2, 10389187), (43, 483218), (86, 241609), (307, 67682), (614, 33841), (787, 26402), (1574, 13201)]