18791997

素因数分解:

$3^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{1993}}^1$

素因数の和:2452

約数の個数: 16

約数和(自身を含む): 28713600

約数和(自身を除く): 9921603

約数列:

[1, 3, 7, 21, 449, 1347, 1993, 3143, 5979, 9429, 13951, 41853, 894857, 2684571, 6263999, 18791997]

約数ペア:

[(1, 18791997), (3, 6263999), (7, 2684571), (21, 894857), (449, 41853), (1347, 13951), (1993, 9429), (3143, 5979)]