21101031

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1091}}^1$

素因数の和:1411

約数の個数: 24

約数和(自身を含む): 34978944

約数和(自身を除く): 13877913

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 1091, 2149, 2763, 3273, 6447, 7637, 9819, 19341, 22911, 68733, 334937, 1004811, 2344559, 3014433, 7033677, 21101031]

約数ペア:

[(1, 21101031), (3, 7033677), (7, 3014433), (9, 2344559), (21, 1004811), (63, 334937), (307, 68733), (921, 22911), (1091, 19341), (2149, 9819), (2763, 7637), (3273, 6447)]