21418712

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5387}}^1$

素因数の和:5471

約数の個数: 32

約数和(自身を含む): 46552320

約数和(自身を除く): 25133608

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5387, 10774, 21548, 37709, 43096, 75418, 150836, 301672, 382477, 764954, 1529908, 2677339, 3059816, 5354678, 10709356, 21418712]

約数ペア:

[(1, 21418712), (2, 10709356), (4, 5354678), (7, 3059816), (8, 2677339), (14, 1529908), (28, 764954), (56, 382477), (71, 301672), (142, 150836), (284, 75418), (497, 43096), (568, 37709), (994, 21548), (1988, 10774), (3976, 5387)]