64157900

素因数分解:

$2^2\times 5^2\times {\mathrm{641579}}^1$

素因数の和:641593

約数の個数: 18

約数和(自身を含む): 139222860

約数和(自身を除く): 75064960

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 641579, 1283158, 2566316, 3207895, 6415790, 12831580, 16039475, 32078950, 64157900]

約数ペア:

[(1, 64157900), (2, 32078950), (4, 16039475), (5, 12831580), (10, 6415790), (20, 3207895), (25, 2566316), (50, 1283158), (100, 641579)]