20511881

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{569}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 22982400

約数和(自身を除く): 2470519

約数列:

[1, 13, 47, 59, 569, 611, 767, 2773, 7397, 26743, 33571, 36049, 347659, 436423, 1577837, 20511881]

約数ペア:

[(1, 20511881), (13, 1577837), (47, 436423), (59, 347659), (569, 36049), (611, 33571), (767, 26743), (2773, 7397)]