20107819.000000000

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1248691}}^1$

素因数の和:1248706

約数の個数: 36

約数和(自身を含む): 681785832

約数和(自身を除く): 457021452

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1248691, 2497382, 3746073, 4994764, 6243455, 7492146, 11238219, 12486910, 14984292, 18730365, 22476438, 24973820, 37460730, 44952876, 56191095, 74921460, 112382190, 224764380]

約数ペア:

[(1, 224764380), (2, 112382190), (3, 74921460), (4, 56191095), (5, 44952876), (6, 37460730), (9, 24973820), (10, 22476438), (12, 18730365), (15, 14984292), (18, 12486910), (20, 11238219), (30, 7492146), (36, 6243455), (45, 4994764), (60, 3746073), (90, 2497382), (180, 1248691)]