28001785

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3089}}^1$

素因数の和:3145

約数の個数: 24

約数和(自身を含む): 40157640

約数和(自身を除く): 12155855

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 3089, 9065, 15445, 21623, 108115, 114293, 151361, 571465, 756805, 800051, 4000255, 5600357, 28001785]

約数ペア:

[(1, 28001785), (5, 5600357), (7, 4000255), (35, 800051), (37, 756805), (49, 571465), (185, 151361), (245, 114293), (259, 108115), (1295, 21623), (1813, 15445), (3089, 9065)]