489401560

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{121139}}^1$

素因数の和:121251

約数の個数: 32

約数和(自身を含む): 1112065200

約数和(自身を除く): 622663640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 121139, 242278, 484556, 605695, 969112, 1211390, 2422780, 4845560, 12235039, 24470078, 48940156, 61175195, 97880312, 122350390, 244700780, 489401560]

約数ペア:

[(1, 489401560), (2, 244700780), (4, 122350390), (5, 97880312), (8, 61175195), (10, 48940156), (20, 24470078), (40, 12235039), (101, 4845560), (202, 2422780), (404, 1211390), (505, 969112), (808, 605695), (1010, 484556), (2020, 242278), (4040, 121139)]