21210398

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 36246528

約数和(自身を除く): 15036130

約数列:

[1, 2, 11, 22, 37, 71, 74, 142, 367, 407, 734, 781, 814, 1562, 2627, 4037, 5254, 8074, 13579, 26057, 27158, 28897, 52114, 57794, 149369, 286627, 298738, 573254, 964109, 1928218, 10605199, 21210398]

約数ペア:

[(1, 21210398), (2, 10605199), (11, 1928218), (22, 964109), (37, 573254), (71, 298738), (74, 286627), (142, 149369), (367, 57794), (407, 52114), (734, 28897), (781, 27158), (814, 26057), (1562, 13579), (2627, 8074), (4037, 5254)]