13872019905

素因数分解:

$3^4\times 5^1\times {\mathrm{34251901}}^1$

素因数の和:34251918

約数の個数: 20

約数和(自身を含む): 24866880852

約数和(自身を除く): 10994860947

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 34251901, 102755703, 171259505, 308267109, 513778515, 924801327, 1541335545, 2774403981, 4624006635, 13872019905]

約数ペア:

[(1, 13872019905), (3, 4624006635), (5, 2774403981), (9, 1541335545), (15, 924801327), (27, 513778515), (45, 308267109), (81, 171259505), (135, 102755703), (405, 34251901)]