539720

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 1235520

約数和(自身を除く): 695800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 131, 206, 262, 412, 515, 524, 655, 824, 1030, 1048, 1310, 2060, 2620, 4120, 5240, 13493, 26986, 53972, 67465, 107944, 134930, 269860, 539720]

約数ペア:

[(1, 539720), (2, 269860), (4, 134930), (5, 107944), (8, 67465), (10, 53972), (20, 26986), (40, 13493), (103, 5240), (131, 4120), (206, 2620), (262, 2060), (412, 1310), (515, 1048), (524, 1030), (655, 824)]