2012161921

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{3221}}^1$

素因数の和:3326

約数の個数: 48

約数和(自身を含む): 2732771520

約数和(自身を除く): 720609599

約数列:

[1, 7, 11, 19, 49, 61, 77, 133, 209, 427, 539, 671, 931, 1159, 1463, 2989, 3221, 4697, 8113, 10241, 12749, 22547, 32879, 35431, 56791, 61199, 89243, 157829, 196481, 248017, 428393, 624701, 673189, 1375367, 1736119, 2161291, 2998751, 3733139, 4712323, 9627569, 15129037, 26131973, 32986261, 41064529, 105903259, 182923811, 287451703, 2012161921]

約数ペア:

[(1, 2012161921), (7, 287451703), (11, 182923811), (19, 105903259), (49, 41064529), (61, 32986261), (77, 26131973), (133, 15129037), (209, 9627569), (427, 4712323), (539, 3733139), (671, 2998751), (931, 2161291), (1159, 1736119), (1463, 1375367), (2989, 673189), (3221, 624701), (4697, 428393), (8113, 248017), (10241, 196481), (12749, 157829), (22547, 89243), (32879, 61199), (35431, 56791)]