20091438

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 44928000

約数和(自身を除く): 24836562

約数列:

[1, 2, 3, 6, 9, 18, 71, 79, 142, 158, 199, 213, 237, 398, 426, 474, 597, 639, 711, 1194, 1278, 1422, 1791, 3582, 5609, 11218, 14129, 15721, 16827, 28258, 31442, 33654, 42387, 47163, 50481, 84774, 94326, 100962, 127161, 141489, 254322, 282978, 1116191, 2232382, 3348573, 6697146, 10045719, 20091438]

約数ペア:

[(1, 20091438), (2, 10045719), (3, 6697146), (6, 3348573), (9, 2232382), (18, 1116191), (71, 282978), (79, 254322), (142, 141489), (158, 127161), (199, 100962), (213, 94326), (237, 84774), (398, 50481), (426, 47163), (474, 42387), (597, 33654), (639, 31442), (711, 28258), (1194, 16827), (1278, 15721), (1422, 14129), (1791, 11218), (3582, 5609)]