20942978

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1831}}^1$

素因数の和:1902

約数の個数: 32

約数和(自身を含む): 38691840

約数和(自身を除く): 17748862

約数列:

[1, 2, 7, 14, 19, 38, 43, 86, 133, 266, 301, 602, 817, 1634, 1831, 3662, 5719, 11438, 12817, 25634, 34789, 69578, 78733, 157466, 243523, 487046, 551131, 1102262, 1495927, 2991854, 10471489, 20942978]

約数ペア:

[(1, 20942978), (2, 10471489), (7, 2991854), (14, 1495927), (19, 1102262), (38, 551131), (43, 487046), (86, 243523), (133, 157466), (266, 78733), (301, 69578), (602, 34789), (817, 25634), (1634, 12817), (1831, 11438), (3662, 5719)]