19859745

素因数分解:

$3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2003}}^1$

素因数の和:2672

約数の個数: 16

約数和(自身を含む): 31839552

約数和(自身を除く): 11979807

約数列:

[1, 3, 5, 15, 661, 1983, 2003, 3305, 6009, 9915, 10015, 30045, 1323983, 3971949, 6619915, 19859745]

約数ペア:

[(1, 19859745), (3, 6619915), (5, 3971949), (15, 1323983), (661, 30045), (1983, 10015), (2003, 9915), (3305, 6009)]