21697628

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{1249}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 39270000

約数和(自身を除く): 17572372

約数列:

[1, 2, 4, 43, 86, 101, 172, 202, 404, 1249, 2498, 4343, 4996, 8686, 17372, 53707, 107414, 126149, 214828, 252298, 504596, 5424407, 10848814, 21697628]

約数ペア:

[(1, 21697628), (2, 10848814), (4, 5424407), (43, 504596), (86, 252298), (101, 214828), (172, 126149), (202, 107414), (404, 53707), (1249, 17372), (2498, 8686), (4343, 4996)]