21343760

素因数分解:

$2^4\times 5^1\times {\mathrm{266797}}^1$

素因数の和:266810

約数の個数: 20

約数和(自身を含む): 49624428

約数和(自身を除く): 28280668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 266797, 533594, 1067188, 1333985, 2134376, 2667970, 4268752, 5335940, 10671880, 21343760]

約数ペア:

[(1, 21343760), (2, 10671880), (4, 5335940), (5, 4268752), (8, 2667970), (10, 2134376), (16, 1333985), (20, 1067188), (40, 533594), (80, 266797)]