20931340

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9781}}^1$

素因数の和:9897

約数の個数: 24

約数和(自身を含む): 44371152

約数和(自身を除く): 23439812

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9781, 19562, 39124, 48905, 97810, 195620, 1046567, 2093134, 4186268, 5232835, 10465670, 20931340]

約数ペア:

[(1, 20931340), (2, 10465670), (4, 5232835), (5, 4186268), (10, 2093134), (20, 1046567), (107, 195620), (214, 97810), (428, 48905), (535, 39124), (1070, 19562), (2140, 9781)]