21253167

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{487}}^1$

素因数の和:879

約数の個数: 24

約数和(自身を含む): 33217184

約数和(自身を除く): 11964017

約数列:

[1, 3, 9, 13, 39, 117, 373, 487, 1119, 1461, 3357, 4383, 4849, 6331, 14547, 18993, 43641, 56979, 181651, 544953, 1634859, 2361463, 7084389, 21253167]

約数ペア:

[(1, 21253167), (3, 7084389), (9, 2361463), (13, 1634859), (39, 544953), (117, 181651), (373, 56979), (487, 43641), (1119, 18993), (1461, 14547), (3357, 6331), (4383, 4849)]