21481796

素因数分解:

$2^2\times 7^2\times {\mathrm{127}}^1\times {\mathrm{863}}^1$

素因数の和:1008

約数の個数: 36

約数和(自身を含む): 44126208

約数和(自身を除く): 22644412

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 127, 196, 254, 508, 863, 889, 1726, 1778, 3452, 3556, 6041, 6223, 12082, 12446, 24164, 24892, 42287, 84574, 109601, 169148, 219202, 438404, 767207, 1534414, 3068828, 5370449, 10740898, 21481796]

約数ペア:

[(1, 21481796), (2, 10740898), (4, 5370449), (7, 3068828), (14, 1534414), (28, 767207), (49, 438404), (98, 219202), (127, 169148), (196, 109601), (254, 84574), (508, 42287), (863, 24892), (889, 24164), (1726, 12446), (1778, 12082), (3452, 6223), (3556, 6041)]