20147771

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1$

素因数の和:136

約数の個数: 36

約数和(自身を含む): 26581608

約数和(自身を除く): 6433837

約数列:

[1, 7, 17, 19, 49, 67, 119, 133, 323, 361, 469, 833, 931, 1139, 1273, 2261, 2527, 3283, 6137, 7973, 8911, 15827, 17689, 21641, 24187, 42959, 55811, 62377, 151487, 169309, 300713, 411179, 1060409, 1185163, 2878253, 20147771]

約数ペア:

[(1, 20147771), (7, 2878253), (17, 1185163), (19, 1060409), (49, 411179), (67, 300713), (119, 169309), (133, 151487), (323, 62377), (361, 55811), (469, 42959), (833, 24187), (931, 21641), (1139, 17689), (1273, 15827), (2261, 8911), (2527, 7973), (3283, 6137)]