21039472

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77351}}^1$

素因数の和:77376

約数の個数: 20

約数和(自身を含む): 43162416

約数和(自身を除く): 22122944

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77351, 154702, 309404, 618808, 1237616, 1314967, 2629934, 5259868, 10519736, 21039472]

約数ペア:

[(1, 21039472), (2, 10519736), (4, 5259868), (8, 2629934), (16, 1314967), (17, 1237616), (34, 618808), (68, 309404), (136, 154702), (272, 77351)]