20640656

素因数分解:

$2^4\times {\mathrm{227}}^1\times {\mathrm{5683}}^1$

素因数の和:5918

約数の個数: 20

約数和(自身を含む): 40174512

約数和(自身を除く): 19533856

約数列:

[1, 2, 4, 8, 16, 227, 454, 908, 1816, 3632, 5683, 11366, 22732, 45464, 90928, 1290041, 2580082, 5160164, 10320328, 20640656]

約数ペア:

[(1, 20640656), (2, 10320328), (4, 5160164), (8, 2580082), (16, 1290041), (227, 90928), (454, 45464), (908, 22732), (1816, 11366), (3632, 5683)]