20513720

素因数分解:

$2^3\times 5^1\times {\mathrm{512843}}^1$

素因数の和:512854

約数の個数: 16

約数和(自身を含む): 46155960

約数和(自身を除く): 25642240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 512843, 1025686, 2051372, 2564215, 4102744, 5128430, 10256860, 20513720]

約数ペア:

[(1, 20513720), (2, 10256860), (4, 5128430), (5, 4102744), (8, 2564215), (10, 2051372), (20, 1025686), (40, 512843)]