19894745

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{877}}^1$

素因数の和:1244

約数の個数: 16

約数和(自身を含む): 25813200

約数和(自身を除く): 5918455

約数列:

[1, 5, 13, 65, 349, 877, 1745, 4385, 4537, 11401, 22685, 57005, 306073, 1530365, 3978949, 19894745]

約数ペア:

[(1, 19894745), (5, 3978949), (13, 1530365), (65, 306073), (349, 57005), (877, 22685), (1745, 11401), (4385, 4537)]