19955535

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{563}}^1$

素因数の和:727

約数の個数: 32

約数和(自身を含む): 34110720

約数和(自身を除く): 14155185

約数列:

[1, 3, 5, 15, 17, 51, 85, 139, 255, 417, 563, 695, 1689, 2085, 2363, 2815, 7089, 8445, 9571, 11815, 28713, 35445, 47855, 78257, 143565, 234771, 391285, 1173855, 1330369, 3991107, 6651845, 19955535]

約数ペア:

[(1, 19955535), (3, 6651845), (5, 3991107), (15, 1330369), (17, 1173855), (51, 391285), (85, 234771), (139, 143565), (255, 78257), (417, 47855), (563, 35445), (695, 28713), (1689, 11815), (2085, 9571), (2363, 8445), (2815, 7089)]