21891510

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{243239}}^1$

素因数の和:243252

約数の個数: 24

約数和(自身を含む): 56918160

約数和(自身を除く): 35026650

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 243239, 486478, 729717, 1216195, 1459434, 2189151, 2432390, 3648585, 4378302, 7297170, 10945755, 21891510]

約数ペア:

[(1, 21891510), (2, 10945755), (3, 7297170), (5, 4378302), (6, 3648585), (9, 2432390), (10, 2189151), (15, 1459434), (18, 1216195), (30, 729717), (45, 486478), (90, 243239)]