21661078

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:348

約数の個数: 32

約数和(自身を含む): 35582976

約数和(自身を除く): 13921898

約数列:

[1, 2, 23, 43, 46, 47, 86, 94, 233, 466, 989, 1081, 1978, 2021, 2162, 4042, 5359, 10019, 10718, 10951, 20038, 21902, 46483, 92966, 230437, 251873, 460874, 470893, 503746, 941786, 10830539, 21661078]

約数ペア:

[(1, 21661078), (2, 10830539), (23, 941786), (43, 503746), (46, 470893), (47, 460874), (86, 251873), (94, 230437), (233, 92966), (466, 46483), (989, 21902), (1081, 20038), (1978, 10951), (2021, 10718), (2162, 10019), (4042, 5359)]