20511207

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{883}}^1$

素因数の和:1007

約数の個数: 24

約数和(自身を含む): 31028400

約数和(自身を除く): 10517193

約数列:

[1, 3, 9, 29, 87, 89, 261, 267, 801, 883, 2581, 2649, 7743, 7947, 23229, 25607, 76821, 78587, 230463, 235761, 707283, 2279023, 6837069, 20511207]

約数ペア:

[(1, 20511207), (3, 6837069), (9, 2279023), (29, 707283), (87, 235761), (89, 230463), (261, 78587), (267, 76821), (801, 25607), (883, 23229), (2581, 7947), (2649, 7743)]