1561861

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:228

約数の個数: 16

約数和(自身を含む): 1900800

約数和(自身を除く): 338939

約数列:

[1, 7, 23, 89, 109, 161, 623, 763, 2047, 2507, 9701, 14329, 17549, 67907, 223123, 1561861]

約数ペア:

[(1, 1561861), (7, 223123), (23, 67907), (89, 17549), (109, 14329), (161, 9701), (623, 2507), (763, 2047)]