20761975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{331}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 27953072

約数和(自身を除く): 7191097

約数列:

[1, 5, 13, 25, 65, 193, 325, 331, 965, 1655, 2509, 4303, 4825, 8275, 12545, 21515, 62725, 63883, 107575, 319415, 830479, 1597075, 4152395, 20761975]

約数ペア:

[(1, 20761975), (5, 4152395), (13, 1597075), (25, 830479), (65, 319415), (193, 107575), (325, 63883), (331, 62725), (965, 21515), (1655, 12545), (2509, 8275), (4303, 4825)]