64790720

素因数分解:

$2^6\times 5^1\times {\mathrm{202471}}^1$

素因数の和:202488

約数の個数: 28

約数和(自身を含む): 154283664

約数和(自身を除く): 89492944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 202471, 404942, 809884, 1012355, 1619768, 2024710, 3239536, 4049420, 6479072, 8098840, 12958144, 16197680, 32395360, 64790720]

約数ペア:

[(1, 64790720), (2, 32395360), (4, 16197680), (5, 12958144), (8, 8098840), (10, 6479072), (16, 4049420), (20, 3239536), (32, 2024710), (40, 1619768), (64, 1012355), (80, 809884), (160, 404942), (320, 202471)]