21425019

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{677}}^1$

素因数の和:835

約数の個数: 32

約数和(自身を含む): 35928576

約数和(自身を除く): 14503557

約数列:

[1, 3, 7, 11, 21, 33, 77, 137, 231, 411, 677, 959, 1507, 2031, 2877, 4521, 4739, 7447, 10549, 14217, 22341, 31647, 52129, 92749, 156387, 278247, 649243, 1020239, 1947729, 3060717, 7141673, 21425019]

約数ペア:

[(1, 21425019), (3, 7141673), (7, 3060717), (11, 1947729), (21, 1020239), (33, 649243), (77, 278247), (137, 156387), (231, 92749), (411, 52129), (677, 31647), (959, 22341), (1507, 14217), (2031, 10549), (2877, 7447), (4521, 4739)]