28240225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2803}}^1$

素因数の和:2857

約数の個数: 24

約数和(自身を含む): 38941952

約数和(自身を除く): 10701727

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 2803, 10075, 14015, 36439, 70075, 86893, 182195, 434465, 910975, 1129609, 2172325, 5648045, 28240225]

約数ペア:

[(1, 28240225), (5, 5648045), (13, 2172325), (25, 1129609), (31, 910975), (65, 434465), (155, 182195), (325, 86893), (403, 70075), (775, 36439), (2015, 14015), (2803, 10075)]