21195707008

素因数分解:

$2^7\times 7^1\times {\mathrm{191}}^1\times {\mathrm{123853}}^1$

素因数の和:124065

約数の個数: 64

約数和(自身を含む): 48511134720

約数和(自身を除く): 27315427712

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 191, 224, 382, 448, 764, 896, 1337, 1528, 2674, 3056, 5348, 6112, 10696, 12224, 21392, 24448, 42784, 85568, 123853, 171136, 247706, 495412, 866971, 990824, 1733942, 1981648, 3467884, 3963296, 6935768, 7926592, 13871536, 15853184, 23655923, 27743072, 47311846, 55486144, 94623692, 110972288, 165591461, 189247384, 331182922, 378494768, 662365844, 756989536, 1324731688, 1513979072, 2649463376, 3027958144, 5298926752, 10597853504, 21195707008]

約数ペア:

[(1, 21195707008), (2, 10597853504), (4, 5298926752), (7, 3027958144), (8, 2649463376), (14, 1513979072), (16, 1324731688), (28, 756989536), (32, 662365844), (56, 378494768), (64, 331182922), (112, 189247384), (128, 165591461), (191, 110972288), (224, 94623692), (382, 55486144), (448, 47311846), (764, 27743072), (896, 23655923), (1337, 15853184), (1528, 13871536), (2674, 7926592), (3056, 6935768), (5348, 3963296), (6112, 3467884), (10696, 1981648), (12224, 1733942), (21392, 990824), (24448, 866971), (42784, 495412), (85568, 247706), (123853, 171136)]