18701991

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{26987}}^1$

素因数の和:27011

約数の個数: 24

約数和(自身を含む): 33681024

約数和(自身を除く): 14979033

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 26987, 80961, 188909, 242883, 296857, 566727, 890571, 1700181, 2077999, 2671713, 6233997, 18701991]

約数ペア:

[(1, 18701991), (3, 6233997), (7, 2671713), (9, 2077999), (11, 1700181), (21, 890571), (33, 566727), (63, 296857), (77, 242883), (99, 188909), (231, 80961), (693, 26987)]