21545500

素因数分解:

$2^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{1051}}^1$

素因数の和:1111

約数の個数: 48

約数和(自身を含む): 48248928

約数和(自身を除く): 26703428

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 820, 1025, 1051, 2050, 2102, 4100, 4204, 5125, 5255, 10250, 10510, 20500, 21020, 26275, 43091, 52550, 86182, 105100, 131375, 172364, 215455, 262750, 430910, 525500, 861820, 1077275, 2154550, 4309100, 5386375, 10772750, 21545500]

約数ペア:

[(1, 21545500), (2, 10772750), (4, 5386375), (5, 4309100), (10, 2154550), (20, 1077275), (25, 861820), (41, 525500), (50, 430910), (82, 262750), (100, 215455), (125, 172364), (164, 131375), (205, 105100), (250, 86182), (410, 52550), (500, 43091), (820, 26275), (1025, 21020), (1051, 20500), (2050, 10510), (2102, 10250), (4100, 5255), (4204, 5125)]