18916098817

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{21491}}^1$

素因数の和:21610

約数の個数: 48

約数和(自身を含む): 25402512384

約数和(自身を除く): 6486413567

約数列:

[1, 7, 11, 23, 49, 71, 77, 161, 253, 497, 539, 781, 1127, 1633, 1771, 3479, 5467, 11431, 12397, 17963, 21491, 38269, 80017, 125741, 150437, 236401, 494293, 880187, 1053059, 1525861, 1654807, 3460051, 5437223, 10681027, 11583649, 16784471, 24220357, 35094803, 38060561, 74767189, 117491297, 245663621, 266423927, 386042833, 822439079, 1719645347, 2702299831, 18916098817]

約数ペア:

[(1, 18916098817), (7, 2702299831), (11, 1719645347), (23, 822439079), (49, 386042833), (71, 266423927), (77, 245663621), (161, 117491297), (253, 74767189), (497, 38060561), (539, 35094803), (781, 24220357), (1127, 16784471), (1633, 11583649), (1771, 10681027), (3479, 5437223), (5467, 3460051), (11431, 1654807), (12397, 1525861), (17963, 1053059), (21491, 880187), (38269, 494293), (80017, 236401), (125741, 150437)]