18732220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72047}}^1$

素因数の和:72069

約数の個数: 24

約数和(自身を含む): 42364224

約数和(自身を除く): 23632004

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72047, 144094, 288188, 360235, 720470, 936611, 1440940, 1873222, 3746444, 4683055, 9366110, 18732220]

約数ペア:

[(1, 18732220), (2, 9366110), (4, 4683055), (5, 3746444), (10, 1873222), (13, 1440940), (20, 936611), (26, 720470), (52, 360235), (65, 288188), (130, 144094), (260, 72047)]