20381264

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31069}}^1$

素因数の和:31118

約数の個数: 20

約数和(自身を含む): 40453140

約数和(自身を除く): 20071876

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31069, 62138, 124276, 248552, 497104, 1273829, 2547658, 5095316, 10190632, 20381264]

約数ペア:

[(1, 20381264), (2, 10190632), (4, 5095316), (8, 2547658), (16, 1273829), (41, 497104), (82, 248552), (164, 124276), (328, 62138), (656, 31069)]