31440560

素因数分解:

$2^4\times 5^1\times {\mathrm{393007}}^1$

素因数の和:393020

約数の個数: 20

約数和(自身を含む): 73099488

約数和(自身を除く): 41658928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 393007, 786014, 1572028, 1965035, 3144056, 3930070, 6288112, 7860140, 15720280, 31440560]

約数ペア:

[(1, 31440560), (2, 15720280), (4, 7860140), (5, 6288112), (8, 3930070), (10, 3144056), (16, 1965035), (20, 1572028), (40, 786014), (80, 393007)]