21405846

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{6619}}^1$

素因数の和:6649

約数の個数: 48

約数和(自身を含む): 54336960

約数和(自身を除く): 32931114

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 49, 66, 77, 98, 147, 154, 231, 294, 462, 539, 1078, 1617, 3234, 6619, 13238, 19857, 39714, 46333, 72809, 92666, 138999, 145618, 218427, 277998, 324331, 436854, 509663, 648662, 972993, 1019326, 1528989, 1945986, 3057978, 3567641, 7135282, 10702923, 21405846]

約数ペア:

[(1, 21405846), (2, 10702923), (3, 7135282), (6, 3567641), (7, 3057978), (11, 1945986), (14, 1528989), (21, 1019326), (22, 972993), (33, 648662), (42, 509663), (49, 436854), (66, 324331), (77, 277998), (98, 218427), (147, 145618), (154, 138999), (231, 92666), (294, 72809), (462, 46333), (539, 39714), (1078, 19857), (1617, 13238), (3234, 6619)]