20189561

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1409}}^1$

素因数の和:1528

約数の個数: 16

約数和(自身を含む): 24364800

約数和(自身を除く): 4175239

約数列:

[1, 7, 23, 89, 161, 623, 1409, 2047, 9863, 14329, 32407, 125401, 226849, 877807, 2884223, 20189561]

約数ペア:

[(1, 20189561), (7, 2884223), (23, 877807), (89, 226849), (161, 125401), (623, 32407), (1409, 14329), (2047, 9863)]