87868220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{399401}}^1$

素因数の和:399421

約数の個数: 24

約数和(自身を含む): 201298608

約数和(自身を除く): 113430388

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 399401, 798802, 1597604, 1997005, 3994010, 4393411, 7988020, 8786822, 17573644, 21967055, 43934110, 87868220]

約数ペア:

[(1, 87868220), (2, 43934110), (4, 21967055), (5, 17573644), (10, 8786822), (11, 7988020), (20, 4393411), (22, 3994010), (44, 1997005), (55, 1597604), (110, 798802), (220, 399401)]