28150255

素因数分解:

$5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1291}}^1$

素因数の和:1399

約数の個数: 24

約数和(自身を含む): 39767760

約数和(自身を除く): 11617505

約数列:

[1, 5, 7, 35, 49, 89, 245, 445, 623, 1291, 3115, 4361, 6455, 9037, 21805, 45185, 63259, 114899, 316295, 574495, 804293, 4021465, 5630051, 28150255]

約数ペア:

[(1, 28150255), (5, 5630051), (7, 4021465), (35, 804293), (49, 574495), (89, 316295), (245, 114899), (445, 63259), (623, 45185), (1291, 21805), (3115, 9037), (4361, 6455)]