81375640

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{19013}}^1$

素因数の和:19131

約数の個数: 32

約数和(自身を含む): 184816080

約数和(自身を除く): 103440440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 19013, 38026, 76052, 95065, 152104, 190130, 380260, 760520, 2034391, 4068782, 8137564, 10171955, 16275128, 20343910, 40687820, 81375640]

約数ペア:

[(1, 81375640), (2, 40687820), (4, 20343910), (5, 16275128), (8, 10171955), (10, 8137564), (20, 4068782), (40, 2034391), (107, 760520), (214, 380260), (428, 190130), (535, 152104), (856, 95065), (1070, 76052), (2140, 38026), (4280, 19013)]