20520175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{613}}^1$

素因数の和:739

約数の個数: 24

約数和(自身を含む): 27713504

約数和(自身を除く): 7193329

約数列:

[1, 5, 13, 25, 65, 103, 325, 515, 613, 1339, 2575, 3065, 6695, 7969, 15325, 33475, 39845, 63139, 199225, 315695, 820807, 1578475, 4104035, 20520175]

約数ペア:

[(1, 20520175), (5, 4104035), (13, 1578475), (25, 820807), (65, 315695), (103, 199225), (325, 63139), (515, 39845), (613, 33475), (1339, 15325), (2575, 7969), (3065, 6695)]