21145995

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12049}}^1$

素因数の和:12076

約数の個数: 32

約数和(自身を含む): 40488000

約数和(自身を除く): 19342005

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 12049, 36147, 60245, 108441, 156637, 180735, 325323, 469911, 542205, 783185, 1409733, 1626615, 2349555, 4229199, 7048665, 21145995]

約数ペア:

[(1, 21145995), (3, 7048665), (5, 4229199), (9, 2349555), (13, 1626615), (15, 1409733), (27, 783185), (39, 542205), (45, 469911), (65, 325323), (117, 180735), (135, 156637), (195, 108441), (351, 60245), (585, 36147), (1755, 12049)]