21557826

素因数分解:

$2^1\times 3^4\times {\mathrm{133073}}^1$

素因数の和:133087

約数の個数: 20

約数和(自身を含む): 48305862

約数和(自身を除く): 26748036

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 133073, 266146, 399219, 798438, 1197657, 2395314, 3592971, 7185942, 10778913, 21557826]

約数ペア:

[(1, 21557826), (2, 10778913), (3, 7185942), (6, 3592971), (9, 2395314), (18, 1197657), (27, 798438), (54, 399219), (81, 266146), (162, 133073)]