25688745

素因数分解:

$3^5\times 5^1\times {\mathrm{21143}}^1$

素因数の和:21163

約数の個数: 24

約数和(自身を含む): 46178496

約数和(自身を除く): 20489751

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 21143, 63429, 105715, 190287, 317145, 570861, 951435, 1712583, 2854305, 5137749, 8562915, 25688745]

約数ペア:

[(1, 25688745), (3, 8562915), (5, 5137749), (9, 2854305), (15, 1712583), (27, 951435), (45, 570861), (81, 317145), (135, 190287), (243, 105715), (405, 63429), (1215, 21143)]