20486950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{193}}^2$

素因数の和:409

約数の個数: 36

約数和(自身を含む): 41786388

約数和(自身を除く): 21299438

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 193, 275, 386, 550, 965, 1930, 2123, 4246, 4825, 9650, 10615, 21230, 37249, 53075, 74498, 106150, 186245, 372490, 409739, 819478, 931225, 1862450, 2048695, 4097390, 10243475, 20486950]

約数ペア:

[(1, 20486950), (2, 10243475), (5, 4097390), (10, 2048695), (11, 1862450), (22, 931225), (25, 819478), (50, 409739), (55, 372490), (110, 186245), (193, 106150), (275, 74498), (386, 53075), (550, 37249), (965, 21230), (1930, 10615), (2123, 9650), (4246, 4825)]