21678714

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16963}}^1$

素因数の和:17042

約数の個数: 24

約数和(自身を含む): 47634912

約数和(自身を除く): 25956198

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16963, 33926, 50889, 101778, 152667, 305334, 1204373, 2408746, 3613119, 7226238, 10839357, 21678714]

約数ペア:

[(1, 21678714), (2, 10839357), (3, 7226238), (6, 3613119), (9, 2408746), (18, 1204373), (71, 305334), (142, 152667), (213, 101778), (426, 50889), (639, 33926), (1278, 16963)]