21115691080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47990207}}^1$

素因数の和:47990229

約数の個数: 32

約数和(自身を含む): 51829424640

約数和(自身を除く): 30713733560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47990207, 95980414, 191960828, 239951035, 383921656, 479902070, 527892277, 959804140, 1055784554, 1919608280, 2111569108, 2639461385, 4223138216, 5278922770, 10557845540, 21115691080]

約数ペア:

[(1, 21115691080), (2, 10557845540), (4, 5278922770), (5, 4223138216), (8, 2639461385), (10, 2111569108), (11, 1919608280), (20, 1055784554), (22, 959804140), (40, 527892277), (44, 479902070), (55, 383921656), (88, 239951035), (110, 191960828), (220, 95980414), (440, 47990207)]