25798040

素因数分解:

$2^3\times 5^1\times {\mathrm{644951}}^1$

素因数の和:644962

約数の個数: 16

約数和(自身を含む): 58045680

約数和(自身を除く): 32247640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 644951, 1289902, 2579804, 3224755, 5159608, 6449510, 12899020, 25798040]

約数ペア:

[(1, 25798040), (2, 12899020), (4, 6449510), (5, 5159608), (8, 3224755), (10, 2579804), (20, 1289902), (40, 644951)]