28156135

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2803}}^1$

素因数の和:2863

約数の個数: 24

約数和(自身を含む): 40276656

約数和(自身を除く): 12120521

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 287, 1435, 2009, 2803, 10045, 14015, 19621, 98105, 114923, 137347, 574615, 686735, 804461, 4022305, 5631227, 28156135]

約数ペア:

[(1, 28156135), (5, 5631227), (7, 4022305), (35, 804461), (41, 686735), (49, 574615), (205, 137347), (245, 114923), (287, 98105), (1435, 19621), (2009, 14015), (2803, 10045)]