79180040

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{3889}}^1$

素因数の和:4409

約数の個数: 32

約数和(自身を含む): 178551000

約数和(自身を除く): 99370960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 3889, 4072, 5090, 7778, 10180, 15556, 19445, 20360, 31112, 38890, 77780, 155560, 1979501, 3959002, 7918004, 9897505, 15836008, 19795010, 39590020, 79180040]

約数ペア:

[(1, 79180040), (2, 39590020), (4, 19795010), (5, 15836008), (8, 9897505), (10, 7918004), (20, 3959002), (40, 1979501), (509, 155560), (1018, 77780), (2036, 38890), (2545, 31112), (3889, 20360), (4072, 19445), (5090, 15556), (7778, 10180)]