1290735

素因数分解:

$3^4\times 5^1\times {\mathrm{3187}}^1$

素因数の和:3204

約数の個数: 20

約数和(自身を含む): 2314488

約数和(自身を除く): 1023753

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 3187, 9561, 15935, 28683, 47805, 86049, 143415, 258147, 430245, 1290735]

約数ペア:

[(1, 1290735), (3, 430245), (5, 258147), (9, 143415), (15, 86049), (27, 47805), (45, 28683), (81, 15935), (135, 9561), (405, 3187)]