1012780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 2157120

約数和(自身を除く): 1144340

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 641, 790, 1282, 1580, 2564, 3205, 6410, 12820, 50639, 101278, 202556, 253195, 506390, 1012780]

約数ペア:

[(1, 1012780), (2, 506390), (4, 253195), (5, 202556), (10, 101278), (20, 50639), (79, 12820), (158, 6410), (316, 3205), (395, 2564), (641, 1580), (790, 1282)]