18601858

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{11909}}^1$

素因数の和:11993

約数の個数: 16

約数和(自身を含む): 30870720

約数和(自身を除く): 12268862

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 11909, 23818, 130999, 261998, 845539, 1691078, 9300929, 18601858]

約数ペア:

[(1, 18601858), (2, 9300929), (11, 1691078), (22, 845539), (71, 261998), (142, 130999), (781, 23818), (1562, 11909)]