21856714

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{2441}}^1$

素因数の和:2502

約数の個数: 24

約数和(自身を含む): 37025604

約数和(自身を除く): 15168890

約数列:

[1, 2, 11, 22, 37, 74, 121, 242, 407, 814, 2441, 4477, 4882, 8954, 26851, 53702, 90317, 180634, 295361, 590722, 993487, 1986974, 10928357, 21856714]

約数ペア:

[(1, 21856714), (2, 10928357), (11, 1986974), (22, 993487), (37, 590722), (74, 295361), (121, 180634), (242, 90317), (407, 53702), (814, 26851), (2441, 8954), (4477, 4882)]