20407815

素因数分解:

$3^3\times 5^1\times {\mathrm{151169}}^1$

素因数の和:151183

約数の個数: 16

約数和(自身を含む): 36280800

約数和(自身を除く): 15872985

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 151169, 453507, 755845, 1360521, 2267535, 4081563, 6802605, 20407815]

約数ペア:

[(1, 20407815), (3, 6802605), (5, 4081563), (9, 2267535), (15, 1360521), (27, 755845), (45, 453507), (135, 151169)]