28375640

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2281}}^1$

素因数の和:2603

約数の個数: 32

約数和(自身を含む): 64078560

約数和(自身を除く): 35702920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2281, 2488, 3110, 4562, 6220, 9124, 11405, 12440, 18248, 22810, 45620, 91240, 709391, 1418782, 2837564, 3546955, 5675128, 7093910, 14187820, 28375640]

約数ペア:

[(1, 28375640), (2, 14187820), (4, 7093910), (5, 5675128), (8, 3546955), (10, 2837564), (20, 1418782), (40, 709391), (311, 91240), (622, 45620), (1244, 22810), (1555, 18248), (2281, 12440), (2488, 11405), (3110, 9124), (4562, 6220)]