20618900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:209

約数の個数: 72

約数和(自身を含む): 47246976

約数和(自身を除く): 26628076

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 47, 50, 82, 94, 100, 107, 164, 188, 205, 214, 235, 410, 428, 470, 535, 820, 940, 1025, 1070, 1175, 1927, 2050, 2140, 2350, 2675, 3854, 4100, 4387, 4700, 5029, 5350, 7708, 8774, 9635, 10058, 10700, 17548, 19270, 20116, 21935, 25145, 38540, 43870, 48175, 50290, 87740, 96350, 100580, 109675, 125725, 192700, 206189, 219350, 251450, 412378, 438700, 502900, 824756, 1030945, 2061890, 4123780, 5154725, 10309450, 20618900]

約数ペア:

[(1, 20618900), (2, 10309450), (4, 5154725), (5, 4123780), (10, 2061890), (20, 1030945), (25, 824756), (41, 502900), (47, 438700), (50, 412378), (82, 251450), (94, 219350), (100, 206189), (107, 192700), (164, 125725), (188, 109675), (205, 100580), (214, 96350), (235, 87740), (410, 50290), (428, 48175), (470, 43870), (535, 38540), (820, 25145), (940, 21935), (1025, 20116), (1070, 19270), (1175, 17548), (1927, 10700), (2050, 10058), (2140, 9635), (2350, 8774), (2675, 7708), (3854, 5350), (4100, 5029), (4387, 4700)]