20784812

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{337}}^1\times {\mathrm{907}}^1$

素因数の和:1265

約数の個数: 24

約数和(自身を含む): 38669904

約数和(自身を除く): 17885092

約数列:

[1, 2, 4, 17, 34, 68, 337, 674, 907, 1348, 1814, 3628, 5729, 11458, 15419, 22916, 30838, 61676, 305659, 611318, 1222636, 5196203, 10392406, 20784812]

約数ペア:

[(1, 20784812), (2, 10392406), (4, 5196203), (17, 1222636), (34, 611318), (68, 305659), (337, 61676), (674, 30838), (907, 22916), (1348, 15419), (1814, 11458), (3628, 5729)]