15209721

素因数分解:

$3^3\times {\mathrm{239}}^1\times {\mathrm{2357}}^1$

素因数の和:2605

約数の個数: 16

約数和(自身を含む): 22636800

約数和(自身を除く): 7427079

約数列:

[1, 3, 9, 27, 239, 717, 2151, 2357, 6453, 7071, 21213, 63639, 563323, 1689969, 5069907, 15209721]

約数ペア:

[(1, 15209721), (3, 5069907), (9, 1689969), (27, 563323), (239, 63639), (717, 21213), (2151, 7071), (2357, 6453)]