20654075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{617}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 27894048

約数和(自身を除く): 7239973

約数列:

[1, 5, 13, 25, 65, 103, 325, 515, 617, 1339, 2575, 3085, 6695, 8021, 15425, 33475, 40105, 63551, 200525, 317755, 826163, 1588775, 4130815, 20654075]

約数ペア:

[(1, 20654075), (5, 4130815), (13, 1588775), (25, 826163), (65, 317755), (103, 200525), (325, 63551), (515, 40105), (617, 33475), (1339, 15425), (2575, 8021), (3085, 6695)]