20357860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11437}}^1$

素因数の和:11535

約数の個数: 24

約数和(自身を含む): 43235640

約数和(自身を除く): 22877780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11437, 22874, 45748, 57185, 114370, 228740, 1017893, 2035786, 4071572, 5089465, 10178930, 20357860]

約数ペア:

[(1, 20357860), (2, 10178930), (4, 5089465), (5, 4071572), (10, 2035786), (20, 1017893), (89, 228740), (178, 114370), (356, 57185), (445, 45748), (890, 22874), (1780, 11437)]