678761775

素因数分解:

$3^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{4721}}^1$

素因数の和:4814

約数の個数: 60

約数和(自身を含む): 1275279984

約数和(自身を除く): 596518209

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 75, 81, 135, 213, 225, 355, 405, 639, 675, 1065, 1775, 1917, 2025, 3195, 4721, 5325, 5751, 9585, 14163, 15975, 23605, 28755, 42489, 47925, 70815, 118025, 127467, 143775, 212445, 335191, 354075, 382401, 637335, 1005573, 1062225, 1675955, 1912005, 3016719, 3186675, 5027865, 8379775, 9050157, 9560025, 15083595, 25139325, 27150471, 45250785, 75417975, 135752355, 226253925, 678761775]

約数ペア:

[(1, 678761775), (3, 226253925), (5, 135752355), (9, 75417975), (15, 45250785), (25, 27150471), (27, 25139325), (45, 15083595), (71, 9560025), (75, 9050157), (81, 8379775), (135, 5027865), (213, 3186675), (225, 3016719), (355, 1912005), (405, 1675955), (639, 1062225), (675, 1005573), (1065, 637335), (1775, 382401), (1917, 354075), (2025, 335191), (3195, 212445), (4721, 143775), (5325, 127467), (5751, 118025), (9585, 70815), (14163, 47925), (15975, 42489), (23605, 28755)]