21667228

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{503}}^1$

素因数の和:618

約数の個数: 36

約数和(自身を含む): 42230160

約数和(自身を除く): 20562932

約数列:

[1, 2, 4, 11, 22, 44, 89, 121, 178, 242, 356, 484, 503, 979, 1006, 1958, 2012, 3916, 5533, 10769, 11066, 21538, 22132, 43076, 44767, 60863, 89534, 121726, 179068, 243452, 492437, 984874, 1969748, 5416807, 10833614, 21667228]

約数ペア:

[(1, 21667228), (2, 10833614), (4, 5416807), (11, 1969748), (22, 984874), (44, 492437), (89, 243452), (121, 179068), (178, 121726), (242, 89534), (356, 60863), (484, 44767), (503, 43076), (979, 22132), (1006, 21538), (1958, 11066), (2012, 10769), (3916, 5533)]