12688940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 29350944

約数和(自身を除く): 16662004

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 137, 220, 274, 421, 548, 685, 842, 1370, 1507, 1684, 2105, 2740, 3014, 4210, 4631, 6028, 7535, 8420, 9262, 15070, 18524, 23155, 30140, 46310, 57677, 92620, 115354, 230708, 288385, 576770, 634447, 1153540, 1268894, 2537788, 3172235, 6344470, 12688940]

約数ペア:

[(1, 12688940), (2, 6344470), (4, 3172235), (5, 2537788), (10, 1268894), (11, 1153540), (20, 634447), (22, 576770), (44, 288385), (55, 230708), (110, 115354), (137, 92620), (220, 57677), (274, 46310), (421, 30140), (548, 23155), (685, 18524), (842, 15070), (1370, 9262), (1507, 8420), (1684, 7535), (2105, 6028), (2740, 4631), (3014, 4210)]