21484970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12713}}^1$

素因数の和:12746

約数の個数: 24

約数和(自身を含む): 41879916

約数和(自身を除く): 20394946

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12713, 25426, 63565, 127130, 165269, 330538, 826345, 1652690, 2148497, 4296994, 10742485, 21484970]

約数ペア:

[(1, 21484970), (2, 10742485), (5, 4296994), (10, 2148497), (13, 1652690), (26, 826345), (65, 330538), (130, 165269), (169, 127130), (338, 63565), (845, 25426), (1690, 12713)]