87216820

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{6911}}^1$

素因数の和:7551

約数の個数: 24

約数和(自身を含む): 183472128

約数和(自身を除く): 96255308

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 2524, 3155, 6310, 6911, 12620, 13822, 27644, 34555, 69110, 138220, 4360841, 8721682, 17443364, 21804205, 43608410, 87216820]

約数ペア:

[(1, 87216820), (2, 43608410), (4, 21804205), (5, 17443364), (10, 8721682), (20, 4360841), (631, 138220), (1262, 69110), (2524, 34555), (3155, 27644), (6310, 13822), (6911, 12620)]