204489640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{164911}}^1$

素因数の和:164953

約数の個数: 32

約数和(自身を含む): 474946560

約数和(自身を除く): 270456920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 164911, 329822, 659644, 824555, 1319288, 1649110, 3298220, 5112241, 6596440, 10224482, 20448964, 25561205, 40897928, 51122410, 102244820, 204489640]

約数ペア:

[(1, 204489640), (2, 102244820), (4, 51122410), (5, 40897928), (8, 25561205), (10, 20448964), (20, 10224482), (31, 6596440), (40, 5112241), (62, 3298220), (124, 1649110), (155, 1319288), (248, 824555), (310, 659644), (620, 329822), (1240, 164911)]