199894079

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 270864000

約数和(自身を除く): 70969921

約数列:

[1, 7, 11, 19, 49, 77, 131, 133, 149, 209, 539, 917, 931, 1043, 1441, 1463, 1639, 2489, 2831, 6419, 7301, 10087, 10241, 11473, 17423, 19519, 19817, 27379, 31141, 70609, 80311, 121961, 136633, 138719, 191653, 214709, 217987, 370861, 956431, 1341571, 1502963, 1525909, 2596027, 4079471, 10520741, 18172189, 28556297, 199894079]

約数ペア:

[(1, 199894079), (7, 28556297), (11, 18172189), (19, 10520741), (49, 4079471), (77, 2596027), (131, 1525909), (133, 1502963), (149, 1341571), (209, 956431), (539, 370861), (917, 217987), (931, 214709), (1043, 191653), (1441, 138719), (1463, 136633), (1639, 121961), (2489, 80311), (2831, 70609), (6419, 31141), (7301, 27379), (10087, 19817), (10241, 19519), (11473, 17423)]