21149421

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{2447}}^1$

素因数の和:2560

約数の個数: 16

約数和(自身を含む): 29297664

約数和(自身を除く): 8148243

約数列:

[1, 3, 43, 67, 129, 201, 2447, 2881, 7341, 8643, 105221, 163949, 315663, 491847, 7049807, 21149421]

約数ペア:

[(1, 21149421), (3, 7049807), (43, 491847), (67, 315663), (129, 163949), (201, 105221), (2447, 8643), (2881, 7341)]