21691317

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{311}}^1\times {\mathrm{347}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 29532672

約数和(自身を除く): 7841355

約数列:

[1, 3, 67, 201, 311, 347, 933, 1041, 20837, 23249, 62511, 69747, 107917, 323751, 7230439, 21691317]

約数ペア:

[(1, 21691317), (3, 7230439), (67, 323751), (201, 107917), (311, 69747), (347, 62511), (933, 23249), (1041, 20837)]