28782405

素因数分解:

$3^3\times 5^1\times {\mathrm{213203}}^1$

素因数の和:213217

約数の個数: 16

約数和(自身を含む): 51168960

約数和(自身を除く): 22386555

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 213203, 639609, 1066015, 1918827, 3198045, 5756481, 9594135, 28782405]

約数ペア:

[(1, 28782405), (3, 9594135), (5, 5756481), (9, 3198045), (15, 1918827), (27, 1066015), (45, 639609), (135, 213203)]