19786975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{569}}^1$

素因数の和:699

約数の個数: 24

約数和(自身を含む): 26717040

約数和(自身を除く): 6930065

約数列:

[1, 5, 13, 25, 65, 107, 325, 535, 569, 1391, 2675, 2845, 6955, 7397, 14225, 34775, 36985, 60883, 184925, 304415, 791479, 1522075, 3957395, 19786975]

約数ペア:

[(1, 19786975), (5, 3957395), (13, 1522075), (25, 791479), (65, 304415), (107, 184925), (325, 60883), (535, 36985), (569, 34775), (1391, 14225), (2675, 7397), (2845, 6955)]