81403475

素因数分解:

$5^2\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{313}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 103258272

約数和(自身を除く): 21854797

約数列:

[1, 5, 25, 101, 103, 313, 505, 515, 1565, 2525, 2575, 7825, 10403, 31613, 32239, 52015, 158065, 161195, 260075, 790325, 805975, 3256139, 16280695, 81403475]

約数ペア:

[(1, 81403475), (5, 16280695), (25, 3256139), (101, 805975), (103, 790325), (313, 260075), (505, 161195), (515, 158065), (1565, 52015), (2525, 32239), (2575, 31613), (7825, 10403)]