12615905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^2\times {\mathrm{79}}^1$

素因数の和:185

約数の個数: 24

約数和(自身を含む): 16540800

約数和(自身を除く): 3924895

約数列:

[1, 5, 19, 41, 79, 95, 205, 395, 779, 1501, 1681, 3239, 3895, 7505, 8405, 16195, 31939, 61541, 132799, 159695, 307705, 663995, 2523181, 12615905]

約数ペア:

[(1, 12615905), (5, 2523181), (19, 663995), (41, 307705), (79, 159695), (95, 132799), (205, 61541), (395, 31939), (779, 16195), (1501, 8405), (1681, 7505), (3239, 3895)]