858940

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 1833552

約数和(自身を除く): 974612

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 641, 670, 1282, 1340, 2564, 3205, 6410, 12820, 42947, 85894, 171788, 214735, 429470, 858940]

約数ペア:

[(1, 858940), (2, 429470), (4, 214735), (5, 171788), (10, 85894), (20, 42947), (67, 12820), (134, 6410), (268, 3205), (335, 2564), (641, 1340), (670, 1282)]