21979204

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{2531}}^1$

素因数の和:2715

約数の個数: 24

約数和(自身を含む): 41686848

約数和(自身を除く): 19707644

約数列:

[1, 2, 4, 13, 26, 52, 167, 334, 668, 2171, 2531, 4342, 5062, 8684, 10124, 32903, 65806, 131612, 422677, 845354, 1690708, 5494801, 10989602, 21979204]

約数ペア:

[(1, 21979204), (2, 10989602), (4, 5494801), (13, 1690708), (26, 845354), (52, 422677), (167, 131612), (334, 65806), (668, 32903), (2171, 10124), (2531, 8684), (4342, 5062)]