21844280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5407}}^1$

素因数の和:5519

約数の個数: 32

約数和(自身を含む): 49645440

約数和(自身を除く): 27801160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5407, 10814, 21628, 27035, 43256, 54070, 108140, 216280, 546107, 1092214, 2184428, 2730535, 4368856, 5461070, 10922140, 21844280]

約数ペア:

[(1, 21844280), (2, 10922140), (4, 5461070), (5, 4368856), (8, 2730535), (10, 2184428), (20, 1092214), (40, 546107), (101, 216280), (202, 108140), (404, 54070), (505, 43256), (808, 27035), (1010, 21628), (2020, 10814), (4040, 5407)]