64195640

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{4373}}^1$

素因数の和:4751

約数の個数: 32

約数和(自身を含む): 144866880

約数和(自身を除く): 80671240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1468, 1835, 2936, 3670, 4373, 7340, 8746, 14680, 17492, 21865, 34984, 43730, 87460, 174920, 1604891, 3209782, 6419564, 8024455, 12839128, 16048910, 32097820, 64195640]

約数ペア:

[(1, 64195640), (2, 32097820), (4, 16048910), (5, 12839128), (8, 8024455), (10, 6419564), (20, 3209782), (40, 1604891), (367, 174920), (734, 87460), (1468, 43730), (1835, 34984), (2936, 21865), (3670, 17492), (4373, 14680), (7340, 8746)]