128272225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{7019}}^1$

素因数の和:7089

約数の個数: 24

約数和(自身を含む): 172355040

約数和(自身を除く): 44082815

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1075, 3655, 7019, 18275, 35095, 119323, 175475, 301817, 596615, 1509085, 2983075, 5130889, 7545425, 25654445, 128272225]

約数ペア:

[(1, 128272225), (5, 25654445), (17, 7545425), (25, 5130889), (43, 2983075), (85, 1509085), (215, 596615), (425, 301817), (731, 175475), (1075, 119323), (3655, 35095), (7019, 18275)]