8327240

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{509}}^1$

素因数の和:929

約数の個数: 32

約数和(自身を含む): 18819000

約数和(自身を除く): 10491760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 509, 818, 1018, 1636, 2036, 2045, 2545, 3272, 4072, 4090, 5090, 8180, 10180, 16360, 20360, 208181, 416362, 832724, 1040905, 1665448, 2081810, 4163620, 8327240]

約数ペア:

[(1, 8327240), (2, 4163620), (4, 2081810), (5, 1665448), (8, 1040905), (10, 832724), (20, 416362), (40, 208181), (409, 20360), (509, 16360), (818, 10180), (1018, 8180), (1636, 5090), (2036, 4090), (2045, 4072), (2545, 3272)]