18945938

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{991}}^1$

素因数の和:1094

約数の個数: 24

約数和(自身を含む): 31664640

約数和(自身を除く): 12718702

約数列:

[1, 2, 11, 22, 79, 121, 158, 242, 869, 991, 1738, 1982, 9559, 10901, 19118, 21802, 78289, 119911, 156578, 239822, 861179, 1722358, 9472969, 18945938]

約数ペア:

[(1, 18945938), (2, 9472969), (11, 1722358), (22, 861179), (79, 239822), (121, 156578), (158, 119911), (242, 78289), (869, 21802), (991, 19118), (1738, 10901), (1982, 9559)]