21854391

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 32598720

約数和(自身を除く): 10744329

約数列:

[1, 3, 13, 39, 53, 97, 109, 159, 291, 327, 689, 1261, 1417, 2067, 3783, 4251, 5141, 5777, 10573, 15423, 17331, 31719, 66833, 75101, 137449, 200499, 225303, 412347, 560369, 1681107, 7284797, 21854391]

約数ペア:

[(1, 21854391), (3, 7284797), (13, 1681107), (39, 560369), (53, 412347), (97, 225303), (109, 200499), (159, 137449), (291, 75101), (327, 66833), (689, 31719), (1261, 17331), (1417, 15423), (2067, 10573), (3783, 5777), (4251, 5141)]