20719636

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17209}}^1$

素因数の和:17263

約数の個数: 24

約数和(自身を含む): 42405440

約数和(自身を除く): 21685804

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17209, 34418, 68836, 120463, 240926, 481852, 739987, 1479974, 2959948, 5179909, 10359818, 20719636]

約数ペア:

[(1, 20719636), (2, 10359818), (4, 5179909), (7, 2959948), (14, 1479974), (28, 739987), (43, 481852), (86, 240926), (172, 120463), (301, 68836), (602, 34418), (1204, 17209)]