21329919

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{907}}^1$

素因数の和:996

約数の個数: 32

約数和(自身を含む): 34576640

約数和(自身を除く): 13246721

約数列:

[1, 3, 9, 13, 27, 39, 67, 117, 201, 351, 603, 871, 907, 1809, 2613, 2721, 7839, 8163, 11791, 23517, 24489, 35373, 60769, 106119, 182307, 318357, 546921, 789997, 1640763, 2369991, 7109973, 21329919]

約数ペア:

[(1, 21329919), (3, 7109973), (9, 2369991), (13, 1640763), (27, 789997), (39, 546921), (67, 318357), (117, 182307), (201, 106119), (351, 60769), (603, 35373), (871, 24489), (907, 23517), (1809, 11791), (2613, 8163), (2721, 7839)]