21508928

素因数分解:

$2^6\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1171}}^1$

素因数の和:1231

約数の個数: 56

約数和(自身を含む): 50011584

約数和(自身を除く): 28502656

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 64, 82, 112, 164, 224, 287, 328, 448, 574, 656, 1148, 1171, 1312, 2296, 2342, 2624, 4592, 4684, 8197, 9184, 9368, 16394, 18368, 18736, 32788, 37472, 48011, 65576, 74944, 96022, 131152, 192044, 262304, 336077, 384088, 524608, 672154, 768176, 1344308, 1536352, 2688616, 3072704, 5377232, 10754464, 21508928]

約数ペア:

[(1, 21508928), (2, 10754464), (4, 5377232), (7, 3072704), (8, 2688616), (14, 1536352), (16, 1344308), (28, 768176), (32, 672154), (41, 524608), (56, 384088), (64, 336077), (82, 262304), (112, 192044), (164, 131152), (224, 96022), (287, 74944), (328, 65576), (448, 48011), (574, 37472), (656, 32788), (1148, 18736), (1171, 18368), (1312, 16394), (2296, 9368), (2342, 9184), (2624, 8197), (4592, 4684)]