638313816

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:989

約数の個数: 128

約数和(自身を含む): 1928908800

約数和(自身を除く): 1290594984

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 19, 21, 24, 28, 38, 42, 56, 57, 76, 84, 114, 133, 152, 168, 228, 266, 311, 399, 456, 532, 622, 643, 798, 933, 1064, 1244, 1286, 1596, 1866, 1929, 2177, 2488, 2572, 3192, 3732, 3858, 4354, 4501, 5144, 5909, 6531, 7464, 7716, 8708, 9002, 11818, 12217, 13062, 13503, 15432, 17416, 17727, 18004, 23636, 24434, 26124, 27006, 35454, 36008, 36651, 41363, 47272, 48868, 52248, 54012, 70908, 73302, 82726, 85519, 97736, 108024, 124089, 141816, 146604, 165452, 171038, 199973, 248178, 256557, 293208, 330904, 342076, 399946, 496356, 513114, 599919, 684152, 799892, 992712, 1026228, 1199838, 1399811, 1599784, 2052456, 2399676, 2799622, 3799487, 4199433, 4799352, 5599244, 7598974, 8398866, 11198488, 11398461, 15197948, 16797732, 22796922, 26596409, 30395896, 33595464, 45593844, 53192818, 79789227, 91187688, 106385636, 159578454, 212771272, 319156908, 638313816]

約数ペア:

[(1, 638313816), (2, 319156908), (3, 212771272), (4, 159578454), (6, 106385636), (7, 91187688), (8, 79789227), (12, 53192818), (14, 45593844), (19, 33595464), (21, 30395896), (24, 26596409), (28, 22796922), (38, 16797732), (42, 15197948), (56, 11398461), (57, 11198488), (76, 8398866), (84, 7598974), (114, 5599244), (133, 4799352), (152, 4199433), (168, 3799487), (228, 2799622), (266, 2399676), (311, 2052456), (399, 1599784), (456, 1399811), (532, 1199838), (622, 1026228), (643, 992712), (798, 799892), (933, 684152), (1064, 599919), (1244, 513114), (1286, 496356), (1596, 399946), (1866, 342076), (1929, 330904), (2177, 293208), (2488, 256557), (2572, 248178), (3192, 199973), (3732, 171038), (3858, 165452), (4354, 146604), (4501, 141816), (5144, 124089), (5909, 108024), (6531, 97736), (7464, 85519), (7716, 82726), (8708, 73302), (9002, 70908), (11818, 54012), (12217, 52248), (13062, 48868), (13503, 47272), (15432, 41363), (17416, 36651), (17727, 36008), (18004, 35454), (23636, 27006), (24434, 26124)]