21751653

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 18061467

約数列:

[1, 3, 7, 11, 17, 21, 29, 33, 51, 77, 87, 119, 187, 191, 203, 231, 319, 357, 493, 561, 573, 609, 957, 1309, 1337, 1479, 2101, 2233, 3247, 3451, 3927, 4011, 5423, 5539, 6303, 6699, 9741, 10353, 14707, 16269, 16617, 22729, 35717, 37961, 38773, 44121, 60929, 68187, 94163, 107151, 113883, 116319, 182787, 250019, 282489, 426503, 659141, 750057, 1035793, 1279509, 1977423, 3107379, 7250551, 21751653]

約数ペア:

[(1, 21751653), (3, 7250551), (7, 3107379), (11, 1977423), (17, 1279509), (21, 1035793), (29, 750057), (33, 659141), (51, 426503), (77, 282489), (87, 250019), (119, 182787), (187, 116319), (191, 113883), (203, 107151), (231, 94163), (319, 68187), (357, 60929), (493, 44121), (561, 38773), (573, 37961), (609, 35717), (957, 22729), (1309, 16617), (1337, 16269), (1479, 14707), (2101, 10353), (2233, 9741), (3247, 6699), (3451, 6303), (3927, 5539), (4011, 5423)]