21408205252

素因数分解:

$2^2\times 7^2\times {\mathrm{347}}^1\times {\mathrm{314771}}^1$

素因数の和:315136

約数の個数: 36

約数和(自身を含む): 43706721744

約数和(自身を除く): 22298516492

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 347, 694, 1388, 2429, 4858, 9716, 17003, 34006, 68012, 314771, 629542, 1259084, 2203397, 4406794, 8813588, 15423779, 30847558, 61695116, 109225537, 218451074, 436902148, 764578759, 1529157518, 3058315036, 5352051313, 10704102626, 21408205252]

約数ペア:

[(1, 21408205252), (2, 10704102626), (4, 5352051313), (7, 3058315036), (14, 1529157518), (28, 764578759), (49, 436902148), (98, 218451074), (196, 109225537), (347, 61695116), (694, 30847558), (1388, 15423779), (2429, 8813588), (4858, 4406794), (9716, 2203397), (17003, 1259084), (34006, 629542), (68012, 314771)]