19900395

素因数分解:

$3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4133}}^1$

素因数の和:4251

約数の個数: 24

約数和(自身を含む): 34824816

約数和(自身を除く): 14924421

約数列:

[1, 3, 5, 9, 15, 45, 107, 321, 535, 963, 1605, 4133, 4815, 12399, 20665, 37197, 61995, 185985, 442231, 1326693, 2211155, 3980079, 6633465, 19900395]

約数ペア:

[(1, 19900395), (3, 6633465), (5, 3980079), (9, 2211155), (15, 1326693), (45, 442231), (107, 185985), (321, 61995), (535, 37197), (963, 20665), (1605, 12399), (4133, 4815)]