21393512

素因数分解:

$2^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{3709}}^1$

素因数の和:3825

約数の個数: 32

約数和(自身を含む): 46300800

約数和(自身を除く): 24907288

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 103, 206, 412, 721, 824, 1442, 2884, 3709, 5768, 7418, 14836, 25963, 29672, 51926, 103852, 207704, 382027, 764054, 1528108, 2674189, 3056216, 5348378, 10696756, 21393512]

約数ペア:

[(1, 21393512), (2, 10696756), (4, 5348378), (7, 3056216), (8, 2674189), (14, 1528108), (28, 764054), (56, 382027), (103, 207704), (206, 103852), (412, 51926), (721, 29672), (824, 25963), (1442, 14836), (2884, 7418), (3709, 5768)]