20720315

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53819}}^1$

素因数の和:53842

約数の個数: 16

約数和(自身を含む): 31000320

約数和(自身を除く): 10280005

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 53819, 269095, 376733, 592009, 1883665, 2960045, 4144063, 20720315]

約数ペア:

[(1, 20720315), (5, 4144063), (7, 2960045), (11, 1883665), (35, 592009), (55, 376733), (77, 269095), (385, 53819)]