21527420

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{3461}}^1$

素因数の和:3781

約数の個数: 24

約数和(自身を含む): 45366048

約数和(自身を除く): 23838628

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 3461, 6220, 6922, 13844, 17305, 34610, 69220, 1076371, 2152742, 4305484, 5381855, 10763710, 21527420]

約数ペア:

[(1, 21527420), (2, 10763710), (4, 5381855), (5, 4305484), (10, 2152742), (20, 1076371), (311, 69220), (622, 34610), (1244, 17305), (1555, 13844), (3110, 6922), (3461, 6220)]