19653417

素因数分解:

$3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1987}}^1$

素因数の和:2157

約数の個数: 24

約数和(自身を含む): 32666816

約数和(自身を除く): 13013399

約数列:

[1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 1987, 3297, 5961, 9891, 13909, 17883, 41727, 125181, 311959, 935877, 2183713, 2807631, 6551139, 19653417]

約数ペア:

[(1, 19653417), (3, 6551139), (7, 2807631), (9, 2183713), (21, 935877), (63, 311959), (157, 125181), (471, 41727), (1099, 17883), (1413, 13909), (1987, 9891), (3297, 5961)]