128678525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4519}}^1$

素因数の和:4613

約数の個数: 24

約数和(自身を含む): 171506880

約数和(自身を除く): 42828355

約数列:

[1, 5, 17, 25, 67, 85, 335, 425, 1139, 1675, 4519, 5695, 22595, 28475, 76823, 112975, 302773, 384115, 1513865, 1920575, 5147141, 7569325, 25735705, 128678525]

約数ペア:

[(1, 128678525), (5, 25735705), (17, 7569325), (25, 5147141), (67, 1920575), (85, 1513865), (335, 384115), (425, 302773), (1139, 112975), (1675, 76823), (4519, 28475), (5695, 22595)]