21819567

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 37861376

約数和(自身を除く): 16041809

約数列:

[1, 3, 7, 11, 21, 31, 33, 77, 93, 121, 217, 231, 277, 341, 363, 651, 831, 847, 1023, 1939, 2387, 2541, 3047, 3751, 5817, 7161, 8587, 9141, 11253, 21329, 25761, 26257, 33517, 60109, 63987, 78771, 94457, 100551, 180327, 234619, 283371, 661199, 703857, 1039027, 1983597, 3117081, 7273189, 21819567]

約数ペア:

[(1, 21819567), (3, 7273189), (7, 3117081), (11, 1983597), (21, 1039027), (31, 703857), (33, 661199), (77, 283371), (93, 234619), (121, 180327), (217, 100551), (231, 94457), (277, 78771), (341, 63987), (363, 60109), (651, 33517), (831, 26257), (847, 25761), (1023, 21329), (1939, 11253), (2387, 9141), (2541, 8587), (3047, 7161), (3751, 5817)]