2780620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3391}}^1$

素因数の和:3441

約数の個数: 24

約数和(自身を含む): 5983488

約数和(自身を除く): 3202868

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 3391, 6782, 13564, 16955, 33910, 67820, 139031, 278062, 556124, 695155, 1390310, 2780620]

約数ペア:

[(1, 2780620), (2, 1390310), (4, 695155), (5, 556124), (10, 278062), (20, 139031), (41, 67820), (82, 33910), (164, 16955), (205, 13564), (410, 6782), (820, 3391)]