21299481

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6379}}^1$

素因数の和:6445

約数の個数: 24

約数和(自身を含む): 35830080

約数和(自身を除く): 14530599

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6379, 19137, 44653, 57411, 133959, 338087, 401877, 1014261, 2366609, 3042783, 7099827, 21299481]

約数ペア:

[(1, 21299481), (3, 7099827), (7, 3042783), (9, 2366609), (21, 1014261), (53, 401877), (63, 338087), (159, 133959), (371, 57411), (477, 44653), (1113, 19137), (3339, 6379)]