15916221

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 23721984

約数和(自身を除く): 7805763

約数列:

[1, 3, 9, 47, 141, 191, 197, 423, 573, 591, 1719, 1773, 8977, 9259, 26931, 27777, 37627, 80793, 83331, 112881, 338643, 1768469, 5305407, 15916221]

約数ペア:

[(1, 15916221), (3, 5305407), (9, 1768469), (47, 338643), (141, 112881), (191, 83331), (197, 80793), (423, 37627), (573, 27777), (591, 26931), (1719, 9259), (1773, 8977)]