20478605

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 29306880

約数和(自身を除く): 8828275

約数列:

[1, 5, 7, 35, 47, 59, 211, 235, 295, 329, 413, 1055, 1477, 1645, 2065, 2773, 7385, 9917, 12449, 13865, 19411, 49585, 62245, 69419, 87143, 97055, 347095, 435715, 585103, 2925515, 4095721, 20478605]

約数ペア:

[(1, 20478605), (5, 4095721), (7, 2925515), (35, 585103), (47, 435715), (59, 347095), (211, 97055), (235, 87143), (295, 69419), (329, 62245), (413, 49585), (1055, 19411), (1477, 13865), (1645, 12449), (2065, 9917), (2773, 7385)]