28219009

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{859}}^1$

素因数の和:917

約数の個数: 24

約数和(自身を含む): 36697920

約数和(自身を除く): 8478911

約数列:

[1, 7, 13, 19, 91, 133, 247, 361, 859, 1729, 2527, 4693, 6013, 11167, 16321, 32851, 78169, 114247, 212173, 310099, 1485211, 2170693, 4031287, 28219009]

約数ペア:

[(1, 28219009), (7, 4031287), (13, 2170693), (19, 1485211), (91, 310099), (133, 212173), (247, 114247), (361, 78169), (859, 32851), (1729, 16321), (2527, 11167), (4693, 6013)]