17961021

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{461}}^1$

素因数の和:523

約数の個数: 40

約数和(自身を含む): 29739864

約数和(自身を除く): 11778843

約数列:

[1, 3, 9, 13, 27, 37, 39, 81, 111, 117, 333, 351, 461, 481, 999, 1053, 1383, 1443, 2997, 4149, 4329, 5993, 12447, 12987, 17057, 17979, 37341, 38961, 51171, 53937, 153513, 161811, 221741, 460539, 485433, 665223, 1381617, 1995669, 5987007, 17961021]

約数ペア:

[(1, 17961021), (3, 5987007), (9, 1995669), (13, 1381617), (27, 665223), (37, 485433), (39, 460539), (81, 221741), (111, 161811), (117, 153513), (333, 53937), (351, 51171), (461, 38961), (481, 37341), (999, 17979), (1053, 17057), (1383, 12987), (1443, 12447), (2997, 5993), (4149, 4329)]