21274239

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6709}}^1$

素因数の和:6870

約数の個数: 16

約数和(自身を含む): 32637440

約数和(自身を除く): 11363201

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6709, 20127, 46963, 140889, 1013059, 3039177, 7091413, 21274239]

約数ペア:

[(1, 21274239), (3, 7091413), (7, 3039177), (21, 1013059), (151, 140889), (453, 46963), (1057, 20127), (3171, 6709)]