21555404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{3803}}^1$

素因数の和:3929

約数の個数: 24

約数和(自身を含む): 41007120

約数和(自身を除く): 19451716

約数列:

[1, 2, 4, 13, 26, 52, 109, 218, 436, 1417, 2834, 3803, 5668, 7606, 15212, 49439, 98878, 197756, 414527, 829054, 1658108, 5388851, 10777702, 21555404]

約数ペア:

[(1, 21555404), (2, 10777702), (4, 5388851), (13, 1658108), (26, 829054), (52, 414527), (109, 197756), (218, 98878), (436, 49439), (1417, 15212), (2834, 7606), (3803, 5668)]