20904508714817

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{30431}}^1\times {\mathrm{1078411}}^1$

素因数の和:1108869

約数の個数: 24

約数和(自身を含む): 26188950719232

約数和(自身を除く): 5284442004415

約数列:

[1, 7, 13, 49, 91, 637, 30431, 213017, 395603, 1078411, 1491119, 2769221, 7548877, 14019343, 19384547, 52842139, 98135401, 686947807, 32817125141, 229719875987, 426622626833, 1608039131909, 2986358387831, 20904508714817]

約数ペア:

[(1, 20904508714817), (7, 2986358387831), (13, 1608039131909), (49, 426622626833), (91, 229719875987), (637, 32817125141), (30431, 686947807), (213017, 98135401), (395603, 52842139), (1078411, 19384547), (1491119, 14019343), (2769221, 7548877)]