15720280

素因数分解:

$2^3\times 5^1\times {\mathrm{393007}}^1$

素因数の和:393018

約数の個数: 16

約数和(自身を含む): 35370720

約数和(自身を除く): 19650440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 393007, 786014, 1572028, 1965035, 3144056, 3930070, 7860140, 15720280]

約数ペア:

[(1, 15720280), (2, 7860140), (4, 3930070), (5, 3144056), (8, 1965035), (10, 1572028), (20, 786014), (40, 393007)]