20953700

素因数分解:

$2^2\times 5^2\times {\mathrm{317}}^1\times {\mathrm{661}}^1$

素因数の和:992

約数の個数: 36

約数和(自身を含む): 45681972

約数和(自身を除く): 24728272

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 317, 634, 661, 1268, 1322, 1585, 2644, 3170, 3305, 6340, 6610, 7925, 13220, 15850, 16525, 31700, 33050, 66100, 209537, 419074, 838148, 1047685, 2095370, 4190740, 5238425, 10476850, 20953700]

約数ペア:

[(1, 20953700), (2, 10476850), (4, 5238425), (5, 4190740), (10, 2095370), (20, 1047685), (25, 838148), (50, 419074), (100, 209537), (317, 66100), (634, 33050), (661, 31700), (1268, 16525), (1322, 15850), (1585, 13220), (2644, 7925), (3170, 6610), (3305, 6340)]