64981640

素因数分解:

$2^3\times 5^1\times {\mathrm{691}}^1\times {\mathrm{2351}}^1$

素因数の和:3053

約数の個数: 32

約数和(自身を含む): 146482560

約数和(自身を除く): 81500920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 691, 1382, 2351, 2764, 3455, 4702, 5528, 6910, 9404, 11755, 13820, 18808, 23510, 27640, 47020, 94040, 1624541, 3249082, 6498164, 8122705, 12996328, 16245410, 32490820, 64981640]

約数ペア:

[(1, 64981640), (2, 32490820), (4, 16245410), (5, 12996328), (8, 8122705), (10, 6498164), (20, 3249082), (40, 1624541), (691, 94040), (1382, 47020), (2351, 27640), (2764, 23510), (3455, 18808), (4702, 13820), (5528, 11755), (6910, 9404)]