20581815

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{80713}}^1$

素因数の和:80738

約数の個数: 16

約数和(自身を含む): 34868448

約数和(自身を除く): 14286633

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 80713, 242139, 403565, 1210695, 1372121, 4116363, 6860605, 20581815]

約数ペア:

[(1, 20581815), (3, 6860605), (5, 4116363), (15, 1372121), (17, 1210695), (51, 403565), (85, 242139), (255, 80713)]