20855516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 41572608

約数和(自身を除く): 20717092

約数列:

[1, 2, 4, 11, 22, 43, 44, 73, 86, 146, 151, 172, 292, 302, 473, 604, 803, 946, 1606, 1661, 1892, 3139, 3212, 3322, 6278, 6493, 6644, 11023, 12556, 12986, 22046, 25972, 34529, 44092, 69058, 71423, 121253, 138116, 142846, 242506, 285692, 473989, 485012, 947978, 1895956, 5213879, 10427758, 20855516]

約数ペア:

[(1, 20855516), (2, 10427758), (4, 5213879), (11, 1895956), (22, 947978), (43, 485012), (44, 473989), (73, 285692), (86, 242506), (146, 142846), (151, 138116), (172, 121253), (292, 71423), (302, 69058), (473, 44092), (604, 34529), (803, 25972), (946, 22046), (1606, 12986), (1661, 12556), (1892, 11023), (3139, 6644), (3212, 6493), (3322, 6278)]