18381987

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8269}}^1$

素因数の和:8307

約数の個数: 24

約数和(自身を含む): 30102800

約数和(自身を除く): 11720813

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 8269, 24807, 74421, 107497, 157111, 322491, 471333, 967473, 1413999, 2042443, 6127329, 18381987]

約数ペア:

[(1, 18381987), (3, 6127329), (9, 2042443), (13, 1413999), (19, 967473), (39, 471333), (57, 322491), (117, 157111), (171, 107497), (247, 74421), (741, 24807), (2223, 8269)]