20853590

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23431}}^1$

素因数の和:23527

約数の個数: 16

約数和(自身を含む): 37959840

約数和(自身を除く): 17106250

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23431, 46862, 117155, 234310, 2085359, 4170718, 10426795, 20853590]

約数ペア:

[(1, 20853590), (2, 10426795), (5, 4170718), (10, 2085359), (89, 234310), (178, 117155), (445, 46862), (890, 23431)]