21220728

素因数分解:

$2^3\times 3^1\times {\mathrm{389}}^1\times {\mathrm{2273}}^1$

素因数の和:2671

約数の個数: 32

約数和(自身を含む): 53211600

約数和(自身を除く): 31990872

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 389, 778, 1167, 1556, 2273, 2334, 3112, 4546, 4668, 6819, 9092, 9336, 13638, 18184, 27276, 54552, 884197, 1768394, 2652591, 3536788, 5305182, 7073576, 10610364, 21220728]

約数ペア:

[(1, 21220728), (2, 10610364), (3, 7073576), (4, 5305182), (6, 3536788), (8, 2652591), (12, 1768394), (24, 884197), (389, 54552), (778, 27276), (1167, 18184), (1556, 13638), (2273, 9336), (2334, 9092), (3112, 6819), (4546, 4668)]