720483647

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 870190272

約数和(自身を除く): 149706625

約数列:

[1, 13, 17, 37, 71, 73, 221, 289, 481, 629, 923, 949, 1207, 1241, 2627, 2701, 3757, 5183, 8177, 10693, 15691, 16133, 20519, 21097, 34151, 35113, 44659, 45917, 67379, 88111, 139009, 191771, 266747, 274261, 580567, 596921, 759203, 780589, 1145443, 1497887, 2493023, 3260107, 9869639, 10147657, 19472531, 42381391, 55421819, 720483647]

約数ペア:

[(1, 720483647), (13, 55421819), (17, 42381391), (37, 19472531), (71, 10147657), (73, 9869639), (221, 3260107), (289, 2493023), (481, 1497887), (629, 1145443), (923, 780589), (949, 759203), (1207, 596921), (1241, 580567), (2627, 274261), (2701, 266747), (3757, 191771), (5183, 139009), (8177, 88111), (10693, 67379), (15691, 45917), (16133, 44659), (20519, 35113), (21097, 34151)]