21093978

素因数分解:

$2^1\times 3^1\times {\mathrm{509}}^1\times {\mathrm{6907}}^1$

素因数の和:7421

約数の個数: 16

約数和(自身を含む): 42276960

約数和(自身を除く): 21182982

約数列:

[1, 2, 3, 6, 509, 1018, 1527, 3054, 6907, 13814, 20721, 41442, 3515663, 7031326, 10546989, 21093978]

約数ペア:

[(1, 21093978), (2, 10546989), (3, 7031326), (6, 3515663), (509, 41442), (1018, 20721), (1527, 13814), (3054, 6907)]