21009230

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 42230160

約数和(自身を除く): 21220930

約数列:

[1, 2, 5, 10, 11, 22, 55, 97, 110, 121, 179, 194, 242, 358, 485, 605, 895, 970, 1067, 1210, 1790, 1969, 2134, 3938, 5335, 9845, 10670, 11737, 17363, 19690, 21659, 23474, 34726, 43318, 58685, 86815, 108295, 117370, 173630, 190993, 216590, 381986, 954965, 1909930, 2100923, 4201846, 10504615, 21009230]

約数ペア:

[(1, 21009230), (2, 10504615), (5, 4201846), (10, 2100923), (11, 1909930), (22, 954965), (55, 381986), (97, 216590), (110, 190993), (121, 173630), (179, 117370), (194, 108295), (242, 86815), (358, 58685), (485, 43318), (605, 34726), (895, 23474), (970, 21659), (1067, 19690), (1210, 17363), (1790, 11737), (1969, 10670), (2134, 9845), (3938, 5335)]