12728975

素因数分解:

$5^2\times 7^2\times {\mathrm{10391}}^1$

素因数の和:10415

約数の個数: 18

約数和(自身を含む): 18362664

約数和(自身を除く): 5633689

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 10391, 51955, 72737, 259775, 363685, 509159, 1818425, 2545795, 12728975]

約数ペア:

[(1, 12728975), (5, 2545795), (7, 1818425), (25, 509159), (35, 363685), (49, 259775), (175, 72737), (245, 51955), (1225, 10391)]