20942590

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23531}}^1$

素因数の和:23627

約数の個数: 16

約数和(自身を含む): 38121840

約数和(自身を除く): 17179250

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23531, 47062, 117655, 235310, 2094259, 4188518, 10471295, 20942590]

約数ペア:

[(1, 20942590), (2, 10471295), (5, 4188518), (10, 2094259), (89, 235310), (178, 117655), (445, 47062), (890, 23531)]