28791225

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{3121}}^1$

素因数の和:3178

約数の個数: 36

約数和(自身を含む): 52842972

約数和(自身を除く): 24051747

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 205, 225, 369, 615, 1025, 1845, 3075, 3121, 9225, 9363, 15605, 28089, 46815, 78025, 127961, 140445, 234075, 383883, 639805, 702225, 1151649, 1919415, 3199025, 5758245, 9597075, 28791225]

約数ペア:

[(1, 28791225), (3, 9597075), (5, 5758245), (9, 3199025), (15, 1919415), (25, 1151649), (41, 702225), (45, 639805), (75, 383883), (123, 234075), (205, 140445), (225, 127961), (369, 78025), (615, 46815), (1025, 28089), (1845, 15605), (3075, 9363), (3121, 9225)]