19428381

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2251}}^1$

素因数の和:2401

約数の個数: 24

約数和(自身を含む): 32320704

約数和(自身を除く): 12892323

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1233, 2251, 2877, 6753, 8631, 15757, 20259, 47271, 141813, 308387, 925161, 2158709, 2775483, 6476127, 19428381]

約数ペア:

[(1, 19428381), (3, 6476127), (7, 2775483), (9, 2158709), (21, 925161), (63, 308387), (137, 141813), (411, 47271), (959, 20259), (1233, 15757), (2251, 8631), (2877, 6753)]