28210005

素因数分解:

$3^3\times 5^1\times {\mathrm{208963}}^1$

素因数の和:208977

約数の個数: 16

約数和(自身を含む): 50151360

約数和(自身を除く): 21941355

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 208963, 626889, 1044815, 1880667, 3134445, 5642001, 9403335, 28210005]

約数ペア:

[(1, 28210005), (3, 9403335), (5, 5642001), (9, 3134445), (15, 1880667), (27, 1044815), (45, 626889), (135, 208963)]