65206720

素因数分解:

$2^6\times 5^1\times {\mathrm{203771}}^1$

素因数の和:203788

約数の個数: 28

約数和(自身を含む): 155274264

約数和(自身を除く): 90067544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 203771, 407542, 815084, 1018855, 1630168, 2037710, 3260336, 4075420, 6520672, 8150840, 13041344, 16301680, 32603360, 65206720]

約数ペア:

[(1, 65206720), (2, 32603360), (4, 16301680), (5, 13041344), (8, 8150840), (10, 6520672), (16, 4075420), (20, 3260336), (32, 2037710), (40, 1630168), (64, 1018855), (80, 815084), (160, 407542), (320, 203771)]