21407312451

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{21689273}}^1$

素因数の和:21689330

約数の個数: 16

約数和(自身を含む): 33314724864

約数和(自身を除く): 11907412413

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 21689273, 65067819, 151824911, 455474733, 1019395831, 3058187493, 7135770817, 21407312451]

約数ペア:

[(1, 21407312451), (3, 7135770817), (7, 3058187493), (21, 1019395831), (47, 455474733), (141, 151824911), (329, 65067819), (987, 21689273)]