64642100

素因数分解:

$2^2\times 5^2\times {\mathrm{646421}}^1$

素因数の和:646435

約数の個数: 18

約数和(自身を含む): 140273574

約数和(自身を除く): 75631474

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 646421, 1292842, 2585684, 3232105, 6464210, 12928420, 16160525, 32321050, 64642100]

約数ペア:

[(1, 64642100), (2, 32321050), (4, 16160525), (5, 12928420), (10, 6464210), (20, 3232105), (25, 2585684), (50, 1292842), (100, 646421)]