64386880

素因数分解:

$2^6\times 5^1\times {\mathrm{201209}}^1$

素因数の和:201226

約数の個数: 28

約数和(自身を含む): 153322020

約数和(自身を除く): 88935140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 201209, 402418, 804836, 1006045, 1609672, 2012090, 3219344, 4024180, 6438688, 8048360, 12877376, 16096720, 32193440, 64386880]

約数ペア:

[(1, 64386880), (2, 32193440), (4, 16096720), (5, 12877376), (8, 8048360), (10, 6438688), (16, 4024180), (20, 3219344), (32, 2012090), (40, 1609672), (64, 1006045), (80, 804836), (160, 402418), (320, 201209)]