20396509

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1291}}^1$

素因数の和:1396

約数の個数: 16

約数和(自身を含む): 24351616

約数和(自身を除く): 3955107

約数列:

[1, 7, 37, 61, 259, 427, 1291, 2257, 9037, 15799, 47767, 78751, 334369, 551257, 2913787, 20396509]

約数ペア:

[(1, 20396509), (7, 2913787), (37, 551257), (61, 334369), (259, 78751), (427, 47767), (1291, 15799), (2257, 9037)]