21906716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 43512000

約数和(自身を除く): 21605284

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 73, 116, 146, 199, 292, 377, 398, 754, 796, 949, 1508, 1898, 2117, 2587, 3796, 4234, 5174, 5771, 8468, 10348, 11542, 14527, 23084, 27521, 29054, 55042, 58108, 75023, 110084, 150046, 188851, 300092, 377702, 421283, 755404, 842566, 1685132, 5476679, 10953358, 21906716]

約数ペア:

[(1, 21906716), (2, 10953358), (4, 5476679), (13, 1685132), (26, 842566), (29, 755404), (52, 421283), (58, 377702), (73, 300092), (116, 188851), (146, 150046), (199, 110084), (292, 75023), (377, 58108), (398, 55042), (754, 29054), (796, 27521), (949, 23084), (1508, 14527), (1898, 11542), (2117, 10348), (2587, 8468), (3796, 5771), (4234, 5174)]