64818740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{6521}}^1$

素因数の和:6608

約数の個数: 48

約数和(自身を含む): 157780224

約数和(自身を除く): 92961484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 6521, 9940, 13042, 26084, 32605, 45647, 65210, 91294, 130420, 182588, 228235, 456470, 462991, 912940, 925982, 1851964, 2314955, 3240937, 4629910, 6481874, 9259820, 12963748, 16204685, 32409370, 64818740]

約数ペア:

[(1, 64818740), (2, 32409370), (4, 16204685), (5, 12963748), (7, 9259820), (10, 6481874), (14, 4629910), (20, 3240937), (28, 2314955), (35, 1851964), (70, 925982), (71, 912940), (140, 462991), (142, 456470), (284, 228235), (355, 182588), (497, 130420), (710, 91294), (994, 65210), (1420, 45647), (1988, 32605), (2485, 26084), (4970, 13042), (6521, 9940)]