20854475

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 27141120

約数和(自身を除く): 6286645

約数列:

[1, 5, 25, 31, 71, 155, 355, 379, 775, 1775, 1895, 2201, 9475, 11005, 11749, 26909, 55025, 58745, 134545, 293725, 672725, 834179, 4170895, 20854475]

約数ペア:

[(1, 20854475), (5, 4170895), (25, 834179), (31, 672725), (71, 293725), (155, 134545), (355, 58745), (379, 55025), (775, 26909), (1775, 11749), (1895, 11005), (2201, 9475)]