21998186

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{25759}}^1$

素因数の和:25829

約数の個数: 16

約数和(自身を含む): 38330880

約数和(自身を除く): 16332694

約数列:

[1, 2, 7, 14, 61, 122, 427, 854, 25759, 51518, 180313, 360626, 1571299, 3142598, 10999093, 21998186]

約数ペア:

[(1, 21998186), (2, 10999093), (7, 3142598), (14, 1571299), (61, 360626), (122, 180313), (427, 51518), (854, 25759)]