20079475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1993}}^1$

素因数の和:2047

約数の個数: 24

約数和(自身を含む): 27692672

約数和(自身を除く): 7613197

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 1993, 2015, 9965, 10075, 25909, 49825, 61783, 129545, 308915, 647725, 803179, 1544575, 4015895, 20079475]

約数ペア:

[(1, 20079475), (5, 4015895), (13, 1544575), (25, 803179), (31, 647725), (65, 308915), (155, 129545), (325, 61783), (403, 49825), (775, 25909), (1993, 10075), (2015, 9965)]