4081520

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{313}}^1$

素因数の和:489

約数の個数: 40

約数和(自身を含む): 9578256

約数和(自身を除く): 5496736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 313, 326, 626, 652, 815, 1252, 1304, 1565, 1630, 2504, 2608, 3130, 3260, 5008, 6260, 6520, 12520, 13040, 25040, 51019, 102038, 204076, 255095, 408152, 510190, 816304, 1020380, 2040760, 4081520]

約数ペア:

[(1, 4081520), (2, 2040760), (4, 1020380), (5, 816304), (8, 510190), (10, 408152), (16, 255095), (20, 204076), (40, 102038), (80, 51019), (163, 25040), (313, 13040), (326, 12520), (626, 6520), (652, 6260), (815, 5008), (1252, 3260), (1304, 3130), (1565, 2608), (1630, 2504)]