21720402

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{673}}^1$

素因数の和:855

約数の個数: 48

約数和(自身を含む): 51730848

約数和(自身を除く): 30010446

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 163, 198, 326, 489, 673, 978, 1346, 1467, 1793, 2019, 2934, 3586, 4038, 5379, 6057, 7403, 10758, 12114, 14806, 16137, 22209, 32274, 44418, 66627, 109699, 133254, 219398, 329097, 658194, 987291, 1206689, 1974582, 2413378, 3620067, 7240134, 10860201, 21720402]

約数ペア:

[(1, 21720402), (2, 10860201), (3, 7240134), (6, 3620067), (9, 2413378), (11, 1974582), (18, 1206689), (22, 987291), (33, 658194), (66, 329097), (99, 219398), (163, 133254), (198, 109699), (326, 66627), (489, 44418), (673, 32274), (978, 22209), (1346, 16137), (1467, 14806), (1793, 12114), (2019, 10758), (2934, 7403), (3586, 6057), (4038, 5379)]