21041709

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{1229}}^1$

素因数の和:1684

約数の個数: 16

約数和(自身を含む): 30307200

約数和(自身を除く): 9265491

約数列:

[1, 3, 13, 39, 439, 1229, 1317, 3687, 5707, 15977, 17121, 47931, 539531, 1618593, 7013903, 21041709]

約数ペア:

[(1, 21041709), (3, 7013903), (13, 1618593), (39, 539531), (439, 47931), (1229, 17121), (1317, 15977), (3687, 5707)]