21331215

素因数分解:

$3^3\times 5^1\times {\mathrm{158009}}^1$

素因数の和:158023

約数の個数: 16

約数和(自身を含む): 37922400

約数和(自身を除く): 16591185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 158009, 474027, 790045, 1422081, 2370135, 4266243, 7110405, 21331215]

約数ペア:

[(1, 21331215), (3, 7110405), (5, 4266243), (9, 2370135), (15, 1422081), (27, 790045), (45, 474027), (135, 158009)]