31890280

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{7451}}^1$

素因数の和:7569

約数の個数: 32

約数和(自身を含む): 72433440

約数和(自身を除く): 40543160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 7451, 14902, 29804, 37255, 59608, 74510, 149020, 298040, 797257, 1594514, 3189028, 3986285, 6378056, 7972570, 15945140, 31890280]

約数ペア:

[(1, 31890280), (2, 15945140), (4, 7972570), (5, 6378056), (8, 3986285), (10, 3189028), (20, 1594514), (40, 797257), (107, 298040), (214, 149020), (428, 74510), (535, 59608), (856, 37255), (1070, 29804), (2140, 14902), (4280, 7451)]