20921269936

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{219503}}^1$

素因数の和:219578

約数の個数: 80

約数和(自身を含む): 49646536704

約数和(自身を除く): 28725266768

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 37, 46, 56, 74, 92, 112, 148, 161, 184, 259, 296, 322, 368, 518, 592, 644, 851, 1036, 1288, 1702, 2072, 2576, 3404, 4144, 5957, 6808, 11914, 13616, 23828, 47656, 95312, 219503, 439006, 878012, 1536521, 1756024, 3073042, 3512048, 5048569, 6146084, 8121611, 10097138, 12292168, 16243222, 20194276, 24584336, 32486444, 35339983, 40388552, 56851277, 64972888, 70679966, 80777104, 113702554, 129945776, 141359932, 186797053, 227405108, 282719864, 373594106, 454810216, 565439728, 747188212, 909620432, 1307579371, 1494376424, 2615158742, 2988752848, 5230317484, 10460634968, 20921269936]

約数ペア:

[(1, 20921269936), (2, 10460634968), (4, 5230317484), (7, 2988752848), (8, 2615158742), (14, 1494376424), (16, 1307579371), (23, 909620432), (28, 747188212), (37, 565439728), (46, 454810216), (56, 373594106), (74, 282719864), (92, 227405108), (112, 186797053), (148, 141359932), (161, 129945776), (184, 113702554), (259, 80777104), (296, 70679966), (322, 64972888), (368, 56851277), (518, 40388552), (592, 35339983), (644, 32486444), (851, 24584336), (1036, 20194276), (1288, 16243222), (1702, 12292168), (2072, 10097138), (2576, 8121611), (3404, 6146084), (4144, 5048569), (5957, 3512048), (6808, 3073042), (11914, 1756024), (13616, 1536521), (23828, 878012), (47656, 439006), (95312, 219503)]