25642520

素因数分解:

$2^3\times 5^1\times {\mathrm{617}}^1\times {\mathrm{1039}}^1$

素因数の和:1667

約数の個数: 32

約数和(自身を含む): 57844800

約数和(自身を除く): 32202280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 617, 1039, 1234, 2078, 2468, 3085, 4156, 4936, 5195, 6170, 8312, 10390, 12340, 20780, 24680, 41560, 641063, 1282126, 2564252, 3205315, 5128504, 6410630, 12821260, 25642520]

約数ペア:

[(1, 25642520), (2, 12821260), (4, 6410630), (5, 5128504), (8, 3205315), (10, 2564252), (20, 1282126), (40, 641063), (617, 41560), (1039, 24680), (1234, 20780), (2078, 12340), (2468, 10390), (3085, 8312), (4156, 6170), (4936, 5195)]