20640635

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{6563}}^1$

素因数の和:6622

約数の個数: 16

約数和(自身を含む): 26938656

約数和(自身を除く): 6298021

約数列:

[1, 5, 17, 37, 85, 185, 629, 3145, 6563, 32815, 111571, 242831, 557855, 1214155, 4128127, 20640635]

約数ペア:

[(1, 20640635), (5, 4128127), (17, 1214155), (37, 557855), (85, 242831), (185, 111571), (629, 32815), (3145, 6563)]