21461979

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1753}}^1$

素因数の和:1827

約数の個数: 32

約数和(自身を含む): 36370944

約数和(自身を除く): 14908965

約数列:

[1, 3, 7, 11, 21, 33, 53, 77, 159, 231, 371, 583, 1113, 1749, 1753, 4081, 5259, 12243, 12271, 19283, 36813, 57849, 92909, 134981, 278727, 404943, 650363, 1021999, 1951089, 3065997, 7153993, 21461979]

約数ペア:

[(1, 21461979), (3, 7153993), (7, 3065997), (11, 1951089), (21, 1021999), (33, 650363), (53, 404943), (77, 278727), (159, 134981), (231, 92909), (371, 57849), (583, 36813), (1113, 19283), (1749, 12271), (1753, 12243), (4081, 5259)]