28038820

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^2\times {\mathrm{149}}^1$

素因数の和:352

約数の個数: 36

約数和(自身を含む): 59894100

約数和(自身を除く): 31855280

約数列:

[1, 2, 4, 5, 10, 20, 97, 149, 194, 298, 388, 485, 596, 745, 970, 1490, 1940, 2980, 9409, 14453, 18818, 28906, 37636, 47045, 57812, 72265, 94090, 144530, 188180, 289060, 1401941, 2803882, 5607764, 7009705, 14019410, 28038820]

約数ペア:

[(1, 28038820), (2, 14019410), (4, 7009705), (5, 5607764), (10, 2803882), (20, 1401941), (97, 289060), (149, 188180), (194, 144530), (298, 94090), (388, 72265), (485, 57812), (596, 47045), (745, 37636), (970, 28906), (1490, 18818), (1940, 14453), (2980, 9409)]