19274157

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 33546240

約数和(自身を除く): 14272083

約数列:

[1, 3, 7, 9, 21, 31, 63, 71, 93, 139, 213, 217, 279, 417, 497, 639, 651, 973, 1251, 1491, 1953, 2201, 2919, 4309, 4473, 6603, 8757, 9869, 12927, 15407, 19809, 29607, 30163, 38781, 46221, 69083, 88821, 90489, 138663, 207249, 271467, 305939, 621747, 917817, 2141573, 2753451, 6424719, 19274157]

約数ペア:

[(1, 19274157), (3, 6424719), (7, 2753451), (9, 2141573), (21, 917817), (31, 621747), (63, 305939), (71, 271467), (93, 207249), (139, 138663), (213, 90489), (217, 88821), (279, 69083), (417, 46221), (497, 38781), (639, 30163), (651, 29607), (973, 19809), (1251, 15407), (1491, 12927), (1953, 9869), (2201, 8757), (2919, 6603), (4309, 4473)]