81440517

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{139}}^1\times {\mathrm{541}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 115641120

約数和(自身を除く): 34200603

約数列:

[1, 3, 19, 57, 139, 361, 417, 541, 1083, 1623, 2641, 7923, 10279, 30837, 50179, 75199, 150537, 195301, 225597, 585903, 1428781, 4286343, 27146839, 81440517]

約数ペア:

[(1, 81440517), (3, 27146839), (19, 4286343), (57, 1428781), (139, 585903), (361, 225597), (417, 195301), (541, 150537), (1083, 75199), (1623, 50179), (2641, 30837), (7923, 10279)]