20301291

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{227}}^1\times {\mathrm{523}}^1$

素因数の和:775

約数の個数: 24

約数和(自身を含む): 31062720

約数和(自身を除く): 10761429

約数列:

[1, 3, 9, 19, 57, 171, 227, 523, 681, 1569, 2043, 4313, 4707, 9937, 12939, 29811, 38817, 89433, 118721, 356163, 1068489, 2255699, 6767097, 20301291]

約数ペア:

[(1, 20301291), (3, 6767097), (9, 2255699), (19, 1068489), (57, 356163), (171, 118721), (227, 89433), (523, 38817), (681, 29811), (1569, 12939), (2043, 9937), (4313, 4707)]