21146986

素因数分解:

$2^1\times 7^1\times {\mathrm{1181}}^1\times {\mathrm{1279}}^1$

素因数の和:2469

約数の個数: 16

約数和(自身を含む): 36311040

約数和(自身を除く): 15164054

約数列:

[1, 2, 7, 14, 1181, 1279, 2362, 2558, 8267, 8953, 16534, 17906, 1510499, 3020998, 10573493, 21146986]

約数ペア:

[(1, 21146986), (2, 10573493), (7, 3020998), (14, 1510499), (1181, 17906), (1279, 16534), (2362, 8953), (2558, 8267)]