25647280

素因数分解:

$2^4\times 5^1\times {\mathrm{320591}}^1$

素因数の和:320604

約数の個数: 20

約数和(自身を含む): 59630112

約数和(自身を除く): 33982832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 320591, 641182, 1282364, 1602955, 2564728, 3205910, 5129456, 6411820, 12823640, 25647280]

約数ペア:

[(1, 25647280), (2, 12823640), (4, 6411820), (5, 5129456), (8, 3205910), (10, 2564728), (16, 1602955), (20, 1282364), (40, 641182), (80, 320591)]