28890040

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{7151}}^1$

素因数の和:7263

約数の個数: 32

約数和(自身を含む): 65655360

約数和(自身を除く): 36765320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 7151, 14302, 28604, 35755, 57208, 71510, 143020, 286040, 722251, 1444502, 2889004, 3611255, 5778008, 7222510, 14445020, 28890040]

約数ペア:

[(1, 28890040), (2, 14445020), (4, 7222510), (5, 5778008), (8, 3611255), (10, 2889004), (20, 1444502), (40, 722251), (101, 286040), (202, 143020), (404, 71510), (505, 57208), (808, 35755), (1010, 28604), (2020, 14302), (4040, 7151)]