28193739

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{3719}}^1$

素因数の和:3767

約数の個数: 24

約数和(自身を含む): 45354240

約数和(自身を除く): 17160501

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 3719, 7581, 11157, 26033, 70661, 78099, 211983, 494627, 1342559, 1483881, 4027677, 9397913, 28193739]

約数ペア:

[(1, 28193739), (3, 9397913), (7, 4027677), (19, 1483881), (21, 1342559), (57, 494627), (133, 211983), (361, 78099), (399, 70661), (1083, 26033), (2527, 11157), (3719, 7581)]