20920496

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31891}}^1$

素因数の和:31940

約数の個数: 20

約数和(自身を含む): 41523384

約数和(自身を除く): 20602888

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31891, 63782, 127564, 255128, 510256, 1307531, 2615062, 5230124, 10460248, 20920496]

約数ペア:

[(1, 20920496), (2, 10460248), (4, 5230124), (8, 2615062), (16, 1307531), (41, 510256), (82, 255128), (164, 127564), (328, 63782), (656, 31891)]