202045820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{983}}^1$

素因数の和:1274

約数の個数: 48

約数和(自身を含む): 436423680

約数和(自身を除く): 234377860

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 239, 430, 478, 860, 956, 983, 1195, 1966, 2390, 3932, 4780, 4915, 9830, 10277, 19660, 20554, 41108, 42269, 51385, 84538, 102770, 169076, 205540, 211345, 234937, 422690, 469874, 845380, 939748, 1174685, 2349370, 4698740, 10102291, 20204582, 40409164, 50511455, 101022910, 202045820]

約数ペア:

[(1, 202045820), (2, 101022910), (4, 50511455), (5, 40409164), (10, 20204582), (20, 10102291), (43, 4698740), (86, 2349370), (172, 1174685), (215, 939748), (239, 845380), (430, 469874), (478, 422690), (860, 234937), (956, 211345), (983, 205540), (1195, 169076), (1966, 102770), (2390, 84538), (3932, 51385), (4780, 42269), (4915, 41108), (9830, 20554), (10277, 19660)]