18380943

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2099}}^1$

素因数の和:2251

約数の個数: 24

約数和(自身を含む): 30576000

約数和(自身を除く): 12195057

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2099, 2919, 6297, 8757, 14693, 18891, 44079, 132237, 291761, 875283, 2042327, 2625849, 6126981, 18380943]

約数ペア:

[(1, 18380943), (3, 6126981), (7, 2625849), (9, 2042327), (21, 875283), (63, 291761), (139, 132237), (417, 44079), (973, 18891), (1251, 14693), (2099, 8757), (2919, 6297)]