821567180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{12841}}^1$

素因数の和:13314

約数の個数: 48

約数和(自身を含む): 1976229696

約数和(自身を除く): 1154662516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 457, 914, 1828, 2285, 3199, 4570, 6398, 9140, 12796, 12841, 15995, 25682, 31990, 51364, 63980, 64205, 89887, 128410, 179774, 256820, 359548, 449435, 898870, 1797740, 5868337, 11736674, 23473348, 29341685, 41078359, 58683370, 82156718, 117366740, 164313436, 205391795, 410783590, 821567180]

約数ペア:

[(1, 821567180), (2, 410783590), (4, 205391795), (5, 164313436), (7, 117366740), (10, 82156718), (14, 58683370), (20, 41078359), (28, 29341685), (35, 23473348), (70, 11736674), (140, 5868337), (457, 1797740), (914, 898870), (1828, 449435), (2285, 359548), (3199, 256820), (4570, 179774), (6398, 128410), (9140, 89887), (12796, 64205), (12841, 63980), (15995, 51364), (25682, 31990)]