21335188

素因数分解:

$2^2\times 7^2\times {\mathrm{199}}^1\times {\mathrm{547}}^1$

素因数の和:764

約数の個数: 36

約数和(自身を含む): 43730400

約数和(自身を除く): 22395212

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 199, 398, 547, 796, 1094, 1393, 2188, 2786, 3829, 5572, 7658, 9751, 15316, 19502, 26803, 39004, 53606, 107212, 108853, 217706, 435412, 761971, 1523942, 3047884, 5333797, 10667594, 21335188]

約数ペア:

[(1, 21335188), (2, 10667594), (4, 5333797), (7, 3047884), (14, 1523942), (28, 761971), (49, 435412), (98, 217706), (196, 108853), (199, 107212), (398, 53606), (547, 39004), (796, 26803), (1094, 19502), (1393, 15316), (2188, 9751), (2786, 7658), (3829, 5572)]