12780620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8089}}^1$

素因数の和:8177

約数の個数: 24

約数和(自身を含む): 27182400

約数和(自身を除く): 14401780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 8089, 16178, 32356, 40445, 80890, 161780, 639031, 1278062, 2556124, 3195155, 6390310, 12780620]

約数ペア:

[(1, 12780620), (2, 6390310), (4, 3195155), (5, 2556124), (10, 1278062), (20, 639031), (79, 161780), (158, 80890), (316, 40445), (395, 32356), (790, 16178), (1580, 8089)]