21081872

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4591}}^1$

素因数の和:4647

約数の個数: 40

約数和(自身を含む): 47830272

約数和(自身を除く): 26748400

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 112, 164, 287, 328, 574, 656, 1148, 2296, 4591, 4592, 9182, 18364, 32137, 36728, 64274, 73456, 128548, 188231, 257096, 376462, 514192, 752924, 1317617, 1505848, 2635234, 3011696, 5270468, 10540936, 21081872]

約数ペア:

[(1, 21081872), (2, 10540936), (4, 5270468), (7, 3011696), (8, 2635234), (14, 1505848), (16, 1317617), (28, 752924), (41, 514192), (56, 376462), (82, 257096), (112, 188231), (164, 128548), (287, 73456), (328, 64274), (574, 36728), (656, 32137), (1148, 18364), (2296, 9182), (4591, 4592)]