648336728

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{499}}^1$

素因数の和:593

約数の個数: 72

約数和(自身を含む): 1362892500

約数和(自身を除く): 714555772

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 169, 248, 338, 403, 499, 676, 806, 961, 998, 1352, 1612, 1922, 1996, 3224, 3844, 3992, 5239, 6487, 7688, 10478, 12493, 12974, 15469, 20956, 24986, 25948, 30938, 41912, 49972, 51896, 61876, 84331, 99944, 123752, 162409, 168662, 201097, 324818, 337324, 402194, 479539, 649636, 674648, 804388, 959078, 1299272, 1608776, 1918156, 2614261, 3836312, 5228522, 6234007, 10457044, 12468014, 20914088, 24936028, 49872056, 81042091, 162084182, 324168364, 648336728]

約数ペア:

[(1, 648336728), (2, 324168364), (4, 162084182), (8, 81042091), (13, 49872056), (26, 24936028), (31, 20914088), (52, 12468014), (62, 10457044), (104, 6234007), (124, 5228522), (169, 3836312), (248, 2614261), (338, 1918156), (403, 1608776), (499, 1299272), (676, 959078), (806, 804388), (961, 674648), (998, 649636), (1352, 479539), (1612, 402194), (1922, 337324), (1996, 324818), (3224, 201097), (3844, 168662), (3992, 162409), (5239, 123752), (6487, 99944), (7688, 84331), (10478, 61876), (12493, 51896), (12974, 49972), (15469, 41912), (20956, 30938), (24986, 25948)]