21978954

素因数分解:

$2^1\times 3^2\times {\mathrm{499}}^1\times {\mathrm{2447}}^1$

素因数の和:2954

約数の個数: 24

約数和(自身を含む): 47736000

約数和(自身を除く): 25757046

約数列:

[1, 2, 3, 6, 9, 18, 499, 998, 1497, 2447, 2994, 4491, 4894, 7341, 8982, 14682, 22023, 44046, 1221053, 2442106, 3663159, 7326318, 10989477, 21978954]

約数ペア:

[(1, 21978954), (2, 10989477), (3, 7326318), (6, 3663159), (9, 2442106), (18, 1221053), (499, 44046), (998, 22023), (1497, 14682), (2447, 8982), (2994, 7341), (4491, 4894)]