20509815

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47149}}^1$

素因数の和:47186

約数の個数: 16

約数和(自身を含む): 33948000

約数和(自身を除く): 13438185

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 47149, 141447, 235745, 707235, 1367321, 4101963, 6836605, 20509815]

約数ペア:

[(1, 20509815), (3, 6836605), (5, 4101963), (15, 1367321), (29, 707235), (87, 235745), (145, 141447), (435, 47149)]