21755481

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 11422119

約数列:

[1, 3, 11, 29, 33, 87, 127, 179, 319, 381, 537, 957, 1397, 1969, 3683, 4191, 5191, 5907, 11049, 15573, 22733, 40513, 57101, 68199, 121539, 171303, 250063, 659257, 750189, 1977771, 7251827, 21755481]

約数ペア:

[(1, 21755481), (3, 7251827), (11, 1977771), (29, 750189), (33, 659257), (87, 250063), (127, 171303), (179, 121539), (319, 68199), (381, 57101), (537, 40513), (957, 22733), (1397, 15573), (1969, 11049), (3683, 5907), (4191, 5191)]