19508885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 26725248

約数和(自身を除く): 7216363

約数列:

[1, 5, 11, 43, 55, 73, 113, 215, 365, 473, 565, 803, 1243, 2365, 3139, 4015, 4859, 6215, 8249, 15695, 24295, 34529, 41245, 53449, 90739, 172645, 267245, 354707, 453695, 1773535, 3901777, 19508885]

約数ペア:

[(1, 19508885), (5, 3901777), (11, 1773535), (43, 453695), (55, 354707), (73, 267245), (113, 172645), (215, 90739), (365, 53449), (473, 41245), (565, 34529), (803, 24295), (1243, 15695), (2365, 8249), (3139, 6215), (4015, 4859)]