20969403

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10973}}^1$

素因数の和:11003

約数の個数: 24

約数和(自身を含む): 35029008

約数和(自身を除く): 14059605

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10973, 32919, 76811, 142649, 230433, 427947, 537677, 998543, 1613031, 2995629, 6989801, 20969403]

約数ペア:

[(1, 20969403), (3, 6989801), (7, 2995629), (13, 1613031), (21, 998543), (39, 537677), (49, 427947), (91, 230433), (147, 142649), (273, 76811), (637, 32919), (1911, 10973)]