64663780

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{4679}}^1$

素因数の和:5379

約数の個数: 24

約数和(自身を含む): 136019520

約数和(自身を除く): 71355740

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 2764, 3455, 4679, 6910, 9358, 13820, 18716, 23395, 46790, 93580, 3233189, 6466378, 12932756, 16165945, 32331890, 64663780]

約数ペア:

[(1, 64663780), (2, 32331890), (4, 16165945), (5, 12932756), (10, 6466378), (20, 3233189), (691, 93580), (1382, 46790), (2764, 23395), (3455, 18716), (4679, 13820), (6910, 9358)]