21353776

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{12473}}^1$

素因数の和:12588

約数の個数: 20

約数和(自身を含む): 41762952

約数和(自身を除く): 20409176

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 12473, 24946, 49892, 99784, 199568, 1334611, 2669222, 5338444, 10676888, 21353776]

約数ペア:

[(1, 21353776), (2, 10676888), (4, 5338444), (8, 2669222), (16, 1334611), (107, 199568), (214, 99784), (428, 49892), (856, 24946), (1712, 12473)]