25400920

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{2657}}^1$

素因数の和:2907

約数の個数: 32

約数和(自身を含む): 57412800

約数和(自身を除く): 32011880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1912, 2390, 2657, 4780, 5314, 9560, 10628, 13285, 21256, 26570, 53140, 106280, 635023, 1270046, 2540092, 3175115, 5080184, 6350230, 12700460, 25400920]

約数ペア:

[(1, 25400920), (2, 12700460), (4, 6350230), (5, 5080184), (8, 3175115), (10, 2540092), (20, 1270046), (40, 635023), (239, 106280), (478, 53140), (956, 26570), (1195, 21256), (1912, 13285), (2390, 10628), (2657, 9560), (4780, 5314)]