21190701

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{757}}^1$

素因数の和:841

約数の個数: 32

約数和(自身を含む): 34152448

約数和(自身を除く): 12961747

約数列:

[1, 3, 7, 21, 31, 43, 93, 129, 217, 301, 651, 757, 903, 1333, 2271, 3999, 5299, 9331, 15897, 23467, 27993, 32551, 70401, 97653, 164269, 227857, 492807, 683571, 1009081, 3027243, 7063567, 21190701]

約数ペア:

[(1, 21190701), (3, 7063567), (7, 3027243), (21, 1009081), (31, 683571), (43, 492807), (93, 227857), (129, 164269), (217, 97653), (301, 70401), (651, 32551), (757, 27993), (903, 23467), (1333, 15897), (2271, 9331), (3999, 5299)]