20254520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3541}}^1$

素因数の和:3576

約数の個数: 64

約数和(自身を含む): 53555040

約数和(自身を除く): 33300520

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 3541, 5720, 7082, 14164, 17705, 28328, 35410, 38951, 46033, 70820, 77902, 92066, 141640, 155804, 184132, 194755, 230165, 311608, 368264, 389510, 460330, 506363, 779020, 920660, 1012726, 1558040, 1841320, 2025452, 2531815, 4050904, 5063630, 10127260, 20254520]

約数ペア:

[(1, 20254520), (2, 10127260), (4, 5063630), (5, 4050904), (8, 2531815), (10, 2025452), (11, 1841320), (13, 1558040), (20, 1012726), (22, 920660), (26, 779020), (40, 506363), (44, 460330), (52, 389510), (55, 368264), (65, 311608), (88, 230165), (104, 194755), (110, 184132), (130, 155804), (143, 141640), (220, 92066), (260, 77902), (286, 70820), (440, 46033), (520, 38951), (572, 35410), (715, 28328), (1144, 17705), (1430, 14164), (2860, 7082), (3541, 5720)]