21056595

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6469}}^1$

素因数の和:6515

約数の個数: 32

約数和(自身を含む): 39751680

約数和(自身を除く): 18695085

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 1085, 3255, 6469, 19407, 32345, 45283, 97035, 135849, 200539, 226415, 601617, 679245, 1002695, 1403773, 3008085, 4211319, 7018865, 21056595]

約数ペア:

[(1, 21056595), (3, 7018865), (5, 4211319), (7, 3008085), (15, 1403773), (21, 1002695), (31, 679245), (35, 601617), (93, 226415), (105, 200539), (155, 135849), (217, 97035), (465, 45283), (651, 32345), (1085, 19407), (3255, 6469)]