21245504

素因数分解:

$2^6\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1009}}^1$

素因数の和:1075

約数の個数: 56

約数和(自身を含む): 49255680

約数和(自身を除く): 28010176

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 188, 224, 329, 376, 448, 658, 752, 1009, 1316, 1504, 2018, 2632, 3008, 4036, 5264, 7063, 8072, 10528, 14126, 16144, 21056, 28252, 32288, 47423, 56504, 64576, 94846, 113008, 189692, 226016, 331961, 379384, 452032, 663922, 758768, 1327844, 1517536, 2655688, 3035072, 5311376, 10622752, 21245504]

約数ペア:

[(1, 21245504), (2, 10622752), (4, 5311376), (7, 3035072), (8, 2655688), (14, 1517536), (16, 1327844), (28, 758768), (32, 663922), (47, 452032), (56, 379384), (64, 331961), (94, 226016), (112, 189692), (188, 113008), (224, 94846), (329, 64576), (376, 56504), (448, 47423), (658, 32288), (752, 28252), (1009, 21056), (1316, 16144), (1504, 14126), (2018, 10528), (2632, 8072), (3008, 7063), (4036, 5264)]