19817965

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1\times {\mathrm{349}}^1$

素因数の和:672

約数の個数: 16

約数和(自身を含む): 24519600

約数和(自身を除く): 4701635

約数列:

[1, 5, 41, 205, 277, 349, 1385, 1745, 11357, 14309, 56785, 71545, 96673, 483365, 3963593, 19817965]

約数ペア:

[(1, 19817965), (5, 3963593), (41, 483365), (205, 96673), (277, 71545), (349, 56785), (1385, 14309), (1745, 11357)]