19017918

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1$

素因数の和:749

約数の個数: 48

約数和(自身を含む): 43670016

約数和(自身を除く): 24652098

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 71, 138, 142, 207, 213, 414, 426, 639, 647, 1278, 1294, 1633, 1941, 3266, 3882, 4899, 5823, 9798, 11646, 14697, 14881, 29394, 29762, 44643, 45937, 89286, 91874, 133929, 137811, 267858, 275622, 413433, 826866, 1056551, 2113102, 3169653, 6339306, 9508959, 19017918]

約数ペア:

[(1, 19017918), (2, 9508959), (3, 6339306), (6, 3169653), (9, 2113102), (18, 1056551), (23, 826866), (46, 413433), (69, 275622), (71, 267858), (138, 137811), (142, 133929), (207, 91874), (213, 89286), (414, 45937), (426, 44643), (639, 29762), (647, 29394), (1278, 14881), (1294, 14697), (1633, 11646), (1941, 9798), (3266, 5823), (3882, 4899)]