21125090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6421}}^1$

素因数の和:6482

約数の個数: 32

約数和(自身を含む): 44388864

約数和(自身を除く): 23263774

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 70, 94, 235, 329, 470, 658, 1645, 3290, 6421, 12842, 32105, 44947, 64210, 89894, 224735, 301787, 449470, 603574, 1508935, 2112509, 3017870, 4225018, 10562545, 21125090]

約数ペア:

[(1, 21125090), (2, 10562545), (5, 4225018), (7, 3017870), (10, 2112509), (14, 1508935), (35, 603574), (47, 449470), (70, 301787), (94, 224735), (235, 89894), (329, 64210), (470, 44947), (658, 32105), (1645, 12842), (3290, 6421)]