21391000

素因数分解:

$2^3\times 5^3\times {\mathrm{21391}}^1$

素因数の和:21412

約数の個数: 32

約数和(自身を含む): 50057280

約数和(自身を除く): 28666280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 21391, 42782, 85564, 106955, 171128, 213910, 427820, 534775, 855640, 1069550, 2139100, 2673875, 4278200, 5347750, 10695500, 21391000]

約数ペア:

[(1, 21391000), (2, 10695500), (4, 5347750), (5, 4278200), (8, 2673875), (10, 2139100), (20, 1069550), (25, 855640), (40, 534775), (50, 427820), (100, 213910), (125, 171128), (200, 106955), (250, 85564), (500, 42782), (1000, 21391)]