20937821569

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{2447}}^1$

素因数の和:2666

約数の個数: 48

約数和(自身を含む): 25933602816

約数和(自身を除く): 4995781247

約数列:

[1, 7, 31, 43, 49, 131, 217, 301, 917, 1333, 1519, 2107, 2447, 4061, 5633, 6419, 9331, 17129, 28427, 39431, 65317, 75857, 105221, 119903, 174623, 198989, 276017, 320557, 530999, 736547, 1222361, 2243899, 3261851, 3716993, 5155829, 8556527, 9937267, 13783951, 15707293, 22832957, 69560869, 96487657, 159830699, 427302481, 486926083, 675413599, 2991117367, 20937821569]

約数ペア:

[(1, 20937821569), (7, 2991117367), (31, 675413599), (43, 486926083), (49, 427302481), (131, 159830699), (217, 96487657), (301, 69560869), (917, 22832957), (1333, 15707293), (1519, 13783951), (2107, 9937267), (2447, 8556527), (4061, 5155829), (5633, 3716993), (6419, 3261851), (9331, 2243899), (17129, 1222361), (28427, 736547), (39431, 530999), (65317, 320557), (75857, 276017), (105221, 198989), (119903, 174623)]