21025089

素因数分解:

$3^6\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:360

約数の個数: 28

約数和(自身を含む): 31898112

約数和(自身を除く): 10873023

約数列:

[1, 3, 9, 27, 81, 151, 191, 243, 453, 573, 729, 1359, 1719, 4077, 5157, 12231, 15471, 28841, 36693, 46413, 86523, 110079, 139239, 259569, 778707, 2336121, 7008363, 21025089]

約数ペア:

[(1, 21025089), (3, 7008363), (9, 2336121), (27, 778707), (81, 259569), (151, 139239), (191, 110079), (243, 86523), (453, 46413), (573, 36693), (729, 28841), (1359, 15471), (1719, 12231), (4077, 5157)]