20661350

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4643}}^1$

素因数の和:4744

約数の個数: 24

約数和(自身を含む): 38870280

約数和(自身を除く): 18208930

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4643, 9286, 23215, 46430, 116075, 232150, 413227, 826454, 2066135, 4132270, 10330675, 20661350]

約数ペア:

[(1, 20661350), (2, 10330675), (5, 4132270), (10, 2066135), (25, 826454), (50, 413227), (89, 232150), (178, 116075), (445, 46430), (890, 23215), (2225, 9286), (4450, 4643)]