21708477

素因数分解:

$3^2\times 7^1\times {\mathrm{317}}^1\times {\mathrm{1087}}^1$

素因数の和:1417

約数の個数: 24

約数和(自身を含む): 35982336

約数和(自身を除く): 14273859

約数列:

[1, 3, 7, 9, 21, 63, 317, 951, 1087, 2219, 2853, 3261, 6657, 7609, 9783, 19971, 22827, 68481, 344579, 1033737, 2412053, 3101211, 7236159, 21708477]

約数ペア:

[(1, 21708477), (3, 7236159), (7, 3101211), (9, 2412053), (21, 1033737), (63, 344579), (317, 68481), (951, 22827), (1087, 19971), (2219, 9783), (2853, 7609), (3261, 6657)]