21788956

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12757}}^1$

素因数の和:12829

約数の個数: 24

約数和(自身を含む): 44295776

約数和(自身を除く): 22506820

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12757, 25514, 51028, 89299, 178598, 357196, 778177, 1556354, 3112708, 5447239, 10894478, 21788956]

約数ペア:

[(1, 21788956), (2, 10894478), (4, 5447239), (7, 3112708), (14, 1556354), (28, 778177), (61, 357196), (122, 178598), (244, 89299), (427, 51028), (854, 25514), (1708, 12757)]