21147742

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2591}}^1$

素因数の和:2664

約数の個数: 32

約数和(自身を含む): 40310784

約数和(自身を除く): 19163042

約数列:

[1, 2, 7, 11, 14, 22, 53, 77, 106, 154, 371, 583, 742, 1166, 2591, 4081, 5182, 8162, 18137, 28501, 36274, 57002, 137323, 199507, 274646, 399014, 961261, 1510553, 1922522, 3021106, 10573871, 21147742]

約数ペア:

[(1, 21147742), (2, 10573871), (7, 3021106), (11, 1922522), (14, 1510553), (22, 961261), (53, 399014), (77, 274646), (106, 199507), (154, 137323), (371, 57002), (583, 36274), (742, 28501), (1166, 18137), (2591, 8162), (4081, 5182)]