2558440

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{383}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 5806080

約数和(自身を除く): 3247640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 383, 668, 766, 835, 1336, 1532, 1670, 1915, 3064, 3340, 3830, 6680, 7660, 15320, 63961, 127922, 255844, 319805, 511688, 639610, 1279220, 2558440]

約数ペア:

[(1, 2558440), (2, 1279220), (4, 639610), (5, 511688), (8, 319805), (10, 255844), (20, 127922), (40, 63961), (167, 15320), (334, 7660), (383, 6680), (668, 3830), (766, 3340), (835, 3064), (1336, 1915), (1532, 1670)]