21326787

素因数分解:

$3^3\times {\mathrm{151}}^1\times {\mathrm{5231}}^1$

素因数の和:5391

約数の個数: 16

約数和(自身を含む): 31810560

約数和(自身を除く): 10483773

約数列:

[1, 3, 9, 27, 151, 453, 1359, 4077, 5231, 15693, 47079, 141237, 789881, 2369643, 7108929, 21326787]

約数ペア:

[(1, 21326787), (3, 7108929), (9, 2369643), (27, 789881), (151, 141237), (453, 47079), (1359, 15693), (4077, 5231)]