21780422

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{1867}}^1$

素因数の和:2195

約数の個数: 16

約数和(自身を含む): 34520640

約数和(自身を除く): 12740218

約数列:

[1, 2, 19, 38, 307, 614, 1867, 3734, 5833, 11666, 35473, 70946, 573169, 1146338, 10890211, 21780422]

約数ペア:

[(1, 21780422), (2, 10890211), (19, 1146338), (38, 573169), (307, 70946), (614, 35473), (1867, 11666), (3734, 5833)]