80521640

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{20753}}^1$

素因数の和:20861

約数の個数: 32

約数和(自身を含む): 183050280

約数和(自身を除く): 102528640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 20753, 41506, 83012, 103765, 166024, 207530, 415060, 830120, 2013041, 4026082, 8052164, 10065205, 16104328, 20130410, 40260820, 80521640]

約数ペア:

[(1, 80521640), (2, 40260820), (4, 20130410), (5, 16104328), (8, 10065205), (10, 8052164), (20, 4026082), (40, 2013041), (97, 830120), (194, 415060), (388, 207530), (485, 166024), (776, 103765), (970, 83012), (1940, 41506), (3880, 20753)]