20518554

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{691}}^1$

素因数の和:811

約数の個数: 48

約数和(自身を含む): 48279456

約数和(自身を除く): 27760902

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 101, 147, 202, 294, 303, 606, 691, 707, 1382, 1414, 2073, 2121, 4146, 4242, 4837, 4949, 9674, 9898, 14511, 14847, 29022, 29694, 33859, 67718, 69791, 101577, 139582, 203154, 209373, 418746, 488537, 977074, 1465611, 2931222, 3419759, 6839518, 10259277, 20518554]

約数ペア:

[(1, 20518554), (2, 10259277), (3, 6839518), (6, 3419759), (7, 2931222), (14, 1465611), (21, 977074), (42, 488537), (49, 418746), (98, 209373), (101, 203154), (147, 139582), (202, 101577), (294, 69791), (303, 67718), (606, 33859), (691, 29694), (707, 29022), (1382, 14847), (1414, 14511), (2073, 9898), (2121, 9674), (4146, 4949), (4242, 4837)]