21406495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13421}}^1$

素因数の和:13466

約数の個数: 16

約数和(自身を含む): 28991520

約数和(自身を除く): 7585025

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13421, 67105, 147631, 389209, 738155, 1946045, 4281299, 21406495]

約数ペア:

[(1, 21406495), (5, 4281299), (11, 1946045), (29, 738155), (55, 389209), (145, 147631), (319, 67105), (1595, 13421)]