21261903

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13297}}^1$

素因数の和:13354

約数の個数: 16

約数和(自身を含む): 31276896

約数和(自身を除く): 10014993

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13297, 39891, 172861, 518583, 545177, 1635531, 7087301, 21261903]

約数ペア:

[(1, 21261903), (3, 7087301), (13, 1635531), (39, 545177), (41, 518583), (123, 172861), (533, 39891), (1599, 13297)]