20512762010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{337}}^1\times {\mathrm{36017}}^1$

素因数の和:36387

約数の個数: 48

約数和(自身を含む): 40101432696

約数和(自身を除く): 19588670686

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 337, 338, 674, 845, 1685, 1690, 3370, 4381, 8762, 21905, 36017, 43810, 56953, 72034, 113906, 180085, 284765, 360170, 468221, 569530, 936442, 2341105, 4682210, 6086873, 12137729, 12173746, 24275458, 30434365, 60688645, 60868730, 121377290, 157790477, 315580954, 788952385, 1577904770, 2051276201, 4102552402, 10256381005, 20512762010]

約数ペア:

[(1, 20512762010), (2, 10256381005), (5, 4102552402), (10, 2051276201), (13, 1577904770), (26, 788952385), (65, 315580954), (130, 157790477), (169, 121377290), (337, 60868730), (338, 60688645), (674, 30434365), (845, 24275458), (1685, 12173746), (1690, 12137729), (3370, 6086873), (4381, 4682210), (8762, 2341105), (21905, 936442), (36017, 569530), (43810, 468221), (56953, 360170), (72034, 284765), (113906, 180085)]