18721005

素因数分解:

$3^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{2731}}^1$

素因数の和:3196

約数の個数: 16

約数和(自身を含む): 30030144

約数和(自身を除く): 11309139

約数列:

[1, 3, 5, 15, 457, 1371, 2285, 2731, 6855, 8193, 13655, 40965, 1248067, 3744201, 6240335, 18721005]

約数ペア:

[(1, 18721005), (3, 6240335), (5, 3744201), (15, 1248067), (457, 40965), (1371, 13655), (2285, 8193), (2731, 6855)]