12781000

素因数分解:

$2^3\times 5^3\times {\mathrm{12781}}^1$

素因数の和:12802

約数の個数: 32

約数和(自身を含む): 29909880

約数和(自身を除く): 17128880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 12781, 25562, 51124, 63905, 102248, 127810, 255620, 319525, 511240, 639050, 1278100, 1597625, 2556200, 3195250, 6390500, 12781000]

約数ペア:

[(1, 12781000), (2, 6390500), (4, 3195250), (5, 2556200), (8, 1597625), (10, 1278100), (20, 639050), (25, 511240), (40, 319525), (50, 255620), (100, 127810), (125, 102248), (200, 63905), (250, 51124), (500, 25562), (1000, 12781)]