21166383

素因数分解:

$3^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1321}}^1$

素因数の和:1447

約数の個数: 24

約数和(自身を含む): 33155760

約数和(自身を除く): 11989377

約数列:

[1, 3, 7, 21, 49, 109, 147, 327, 763, 1321, 2289, 3963, 5341, 9247, 16023, 27741, 64729, 143989, 194187, 431967, 1007923, 3023769, 7055461, 21166383]

約数ペア:

[(1, 21166383), (3, 7055461), (7, 3023769), (21, 1007923), (49, 431967), (109, 194187), (147, 143989), (327, 64729), (763, 27741), (1321, 16023), (2289, 9247), (3963, 5341)]