31262480

素因数分解:

$2^4\times 5^1\times {\mathrm{390781}}^1$

素因数の和:390794

約数の個数: 20

約数和(自身を含む): 72685452

約数和(自身を除く): 41422972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390781, 781562, 1563124, 1953905, 3126248, 3907810, 6252496, 7815620, 15631240, 31262480]

約数ペア:

[(1, 31262480), (2, 15631240), (4, 7815620), (5, 6252496), (8, 3907810), (10, 3126248), (16, 1953905), (20, 1563124), (40, 781562), (80, 390781)]