20687235

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{983}}^1$

素因数の和:1075

約数の個数: 32

約数和(自身を含む): 35140608

約数和(自身を除く): 14453373

約数列:

[1, 3, 5, 15, 23, 61, 69, 115, 183, 305, 345, 915, 983, 1403, 2949, 4209, 4915, 7015, 14745, 21045, 22609, 59963, 67827, 113045, 179889, 299815, 339135, 899445, 1379149, 4137447, 6895745, 20687235]

約数ペア:

[(1, 20687235), (3, 6895745), (5, 4137447), (15, 1379149), (23, 899445), (61, 339135), (69, 299815), (115, 179889), (183, 113045), (305, 67827), (345, 59963), (915, 22609), (983, 21045), (1403, 14745), (2949, 7015), (4209, 4915)]