21385705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{8273}}^1$

素因数の和:8336

約数の個数: 16

約数和(自身を含む): 28594944

約数和(自身を除く): 7209239

約数列:

[1, 5, 11, 47, 55, 235, 517, 2585, 8273, 41365, 91003, 388831, 455015, 1944155, 4277141, 21385705]

約数ペア:

[(1, 21385705), (5, 4277141), (11, 1944155), (47, 455015), (55, 388831), (235, 91003), (517, 41365), (2585, 8273)]