20991270

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{699709}}^1$

素因数の和:699719

約数の個数: 16

約数和(自身を含む): 50379120

約数和(自身を除く): 29387850

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 699709, 1399418, 2099127, 3498545, 4198254, 6997090, 10495635, 20991270]

約数ペア:

[(1, 20991270), (2, 10495635), (3, 6997090), (5, 4198254), (6, 3498545), (10, 2099127), (15, 1399418), (30, 699709)]