21216676

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{1693}}^1$

素因数の和:1951

約数の個数: 24

約数和(自身を含む): 40174904

約数和(自身を除く): 18958228

約数列:

[1, 2, 4, 13, 26, 52, 241, 482, 964, 1693, 3133, 3386, 6266, 6772, 12532, 22009, 44018, 88036, 408013, 816026, 1632052, 5304169, 10608338, 21216676]

約数ペア:

[(1, 21216676), (2, 10608338), (4, 5304169), (13, 1632052), (26, 816026), (52, 408013), (241, 88036), (482, 44018), (964, 22009), (1693, 12532), (3133, 6772), (3386, 6266)]