28381325

素因数分解:

$5^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1277}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 40568832

約数和(自身を除く): 12187507

約数列:

[1, 5, 7, 25, 35, 127, 175, 635, 889, 1277, 3175, 4445, 6385, 8939, 22225, 31925, 44695, 162179, 223475, 810895, 1135253, 4054475, 5676265, 28381325]

約数ペア:

[(1, 28381325), (5, 5676265), (7, 4054475), (25, 1135253), (35, 810895), (127, 223475), (175, 162179), (635, 44695), (889, 31925), (1277, 22225), (3175, 8939), (4445, 6385)]