18962905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^2$

素因数の和:297

約数の個数: 24

約数和(自身を含む): 26147016

約数和(自身を除く): 7184111

約数列:

[1, 5, 13, 17, 65, 85, 131, 221, 655, 1105, 1703, 2227, 8515, 11135, 17161, 28951, 85805, 144755, 223093, 291737, 1115465, 1458685, 3792581, 18962905]

約数ペア:

[(1, 18962905), (5, 3792581), (13, 1458685), (17, 1115465), (65, 291737), (85, 223093), (131, 144755), (221, 85805), (655, 28951), (1105, 17161), (1703, 11135), (2227, 8515)]