18278825

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1049}}^1$

素因数の和:1117

約数の個数: 24

約数和(自身を含む): 24607800

約数和(自身を除く): 6328975

約数列:

[1, 5, 17, 25, 41, 85, 205, 425, 697, 1025, 1049, 3485, 5245, 17425, 17833, 26225, 43009, 89165, 215045, 445825, 731153, 1075225, 3655765, 18278825]

約数ペア:

[(1, 18278825), (5, 3655765), (17, 1075225), (25, 731153), (41, 445825), (85, 215045), (205, 89165), (425, 43009), (697, 26225), (1025, 17833), (1049, 17425), (3485, 5245)]