66400945

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{179}}^1\times {\mathrm{439}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 86961600

約数和(自身を除く): 20560655

約数列:

[1, 5, 13, 65, 169, 179, 439, 845, 895, 2195, 2327, 5707, 11635, 28535, 30251, 74191, 78581, 151255, 370955, 392905, 1021553, 5107765, 13280189, 66400945]

約数ペア:

[(1, 66400945), (5, 13280189), (13, 5107765), (65, 1021553), (169, 392905), (179, 370955), (439, 151255), (845, 78581), (895, 74191), (2195, 30251), (2327, 28535), (5707, 11635)]