20238788840

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{765461}}^1$

素因数の和:766133

約数の個数: 32

約数和(自身を含む): 45606225960

約数和(自身を除く): 25367437120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5288, 6610, 13220, 26440, 765461, 1530922, 3061844, 3827305, 6123688, 7654610, 15309220, 30618440, 505969721, 1011939442, 2023878884, 2529848605, 4047757768, 5059697210, 10119394420, 20238788840]

約数ペア:

[(1, 20238788840), (2, 10119394420), (4, 5059697210), (5, 4047757768), (8, 2529848605), (10, 2023878884), (20, 1011939442), (40, 505969721), (661, 30618440), (1322, 15309220), (2644, 7654610), (3305, 6123688), (5288, 3827305), (6610, 3061844), (13220, 1530922), (26440, 765461)]