18868913

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{229}}^1$

素因数の和:464

約数の個数: 16

約数和(自身を含む): 22080000

約数和(自身を除く): 3211087

約数列:

[1, 7, 79, 149, 229, 553, 1043, 1603, 11771, 18091, 34121, 82397, 126637, 238847, 2695559, 18868913]

約数ペア:

[(1, 18868913), (7, 2695559), (79, 238847), (149, 126637), (229, 82397), (553, 34121), (1043, 18091), (1603, 11771)]