19656325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1951}}^1$

素因数の和:2005

約数の個数: 24

約数和(自身を含む): 27109376

約数和(自身を除く): 7453051

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 1951, 2015, 9755, 10075, 25363, 48775, 60481, 126815, 302405, 634075, 786253, 1512025, 3931265, 19656325]

約数ペア:

[(1, 19656325), (5, 3931265), (13, 1512025), (25, 786253), (31, 634075), (65, 302405), (155, 126815), (325, 60481), (403, 48775), (775, 25363), (1951, 10075), (2015, 9755)]