4000520

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{971}}^1$

素因数の和:1085

約数の個数: 32

約数和(自身を含む): 9097920

約数和(自身を除く): 5097400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 971, 1030, 1942, 2060, 3884, 4120, 4855, 7768, 9710, 19420, 38840, 100013, 200026, 400052, 500065, 800104, 1000130, 2000260, 4000520]

約数ペア:

[(1, 4000520), (2, 2000260), (4, 1000130), (5, 800104), (8, 500065), (10, 400052), (20, 200026), (40, 100013), (103, 38840), (206, 19420), (412, 9710), (515, 7768), (824, 4855), (971, 4120), (1030, 3884), (1942, 2060)]