28142840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{383}}^1$

素因数の和:572

約数の個数: 64

約数和(自身を含む): 69672960

約数和(自身を除く): 41530120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 167, 220, 334, 383, 440, 668, 766, 835, 1336, 1532, 1670, 1837, 1915, 3064, 3340, 3674, 3830, 4213, 6680, 7348, 7660, 8426, 9185, 14696, 15320, 16852, 18370, 21065, 33704, 36740, 42130, 63961, 73480, 84260, 127922, 168520, 255844, 319805, 511688, 639610, 703571, 1279220, 1407142, 2558440, 2814284, 3517855, 5628568, 7035710, 14071420, 28142840]

約数ペア:

[(1, 28142840), (2, 14071420), (4, 7035710), (5, 5628568), (8, 3517855), (10, 2814284), (11, 2558440), (20, 1407142), (22, 1279220), (40, 703571), (44, 639610), (55, 511688), (88, 319805), (110, 255844), (167, 168520), (220, 127922), (334, 84260), (383, 73480), (440, 63961), (668, 42130), (766, 36740), (835, 33704), (1336, 21065), (1532, 18370), (1670, 16852), (1837, 15320), (1915, 14696), (3064, 9185), (3340, 8426), (3674, 7660), (3830, 7348), (4213, 6680)]