20180682920

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1823}}^1\times {\mathrm{2539}}^1$

素因数の和:4482

約数の個数: 64

約数和(自身を含む): 45866304000

約数和(自身を除く): 25685621080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 1823, 2180, 2539, 3646, 4360, 5078, 7292, 9115, 10156, 12695, 14584, 18230, 20312, 25390, 36460, 50780, 72920, 101560, 198707, 276751, 397414, 553502, 794828, 993535, 1107004, 1383755, 1589656, 1987070, 2214008, 2767510, 3974140, 4628597, 5535020, 7948280, 9257194, 11070040, 18514388, 23142985, 37028776, 46285970, 92571940, 185143880, 504517073, 1009034146, 2018068292, 2522585365, 4036136584, 5045170730, 10090341460, 20180682920]

約数ペア:

[(1, 20180682920), (2, 10090341460), (4, 5045170730), (5, 4036136584), (8, 2522585365), (10, 2018068292), (20, 1009034146), (40, 504517073), (109, 185143880), (218, 92571940), (436, 46285970), (545, 37028776), (872, 23142985), (1090, 18514388), (1823, 11070040), (2180, 9257194), (2539, 7948280), (3646, 5535020), (4360, 4628597), (5078, 3974140), (7292, 2767510), (9115, 2214008), (10156, 1987070), (12695, 1589656), (14584, 1383755), (18230, 1107004), (20312, 993535), (25390, 794828), (36460, 553502), (50780, 397414), (72920, 276751), (101560, 198707)]