19128940

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4289}}^1$

素因数の和:4521

約数の個数: 24

約数和(自身を含む): 40360320

約数和(自身を除く): 21231380

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4289, 4460, 8578, 17156, 21445, 42890, 85780, 956447, 1912894, 3825788, 4782235, 9564470, 19128940]

約数ペア:

[(1, 19128940), (2, 9564470), (4, 4782235), (5, 3825788), (10, 1912894), (20, 956447), (223, 85780), (446, 42890), (892, 21445), (1115, 17156), (2230, 8578), (4289, 4460)]