18864716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{887}}^1$

素因数の和:1313

約数の個数: 24

約数和(自身を含む): 35679840

約数和(自身を除く): 16815124

約数列:

[1, 2, 4, 13, 26, 52, 409, 818, 887, 1636, 1774, 3548, 5317, 10634, 11531, 21268, 23062, 46124, 362783, 725566, 1451132, 4716179, 9432358, 18864716]

約数ペア:

[(1, 18864716), (2, 9432358), (4, 4716179), (13, 1451132), (26, 725566), (52, 362783), (409, 46124), (818, 23062), (887, 21268), (1636, 11531), (1774, 10634), (3548, 5317)]