21102355

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{607}}^1$

素因数の和:1038

約数の個数: 16

約数和(自身を含む): 26922240

約数和(自身を除く): 5819885

約数列:

[1, 5, 17, 85, 409, 607, 2045, 3035, 6953, 10319, 34765, 51595, 248263, 1241315, 4220471, 21102355]

約数ペア:

[(1, 21102355), (5, 4220471), (17, 1241315), (85, 248263), (409, 51595), (607, 34765), (2045, 10319), (3035, 6953)]