128678640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28219}}^1$

素因数の和:28254

約数の個数: 80

約数和(自身を含む): 419913600

約数和(自身を除く): 291234960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 570, 760, 912, 1140, 1520, 2280, 4560, 28219, 56438, 84657, 112876, 141095, 169314, 225752, 282190, 338628, 423285, 451504, 536161, 564380, 677256, 846570, 1072322, 1128760, 1354512, 1608483, 1693140, 2144644, 2257520, 2680805, 3216966, 3386280, 4289288, 5361610, 6433932, 6772560, 8042415, 8578576, 10723220, 12867864, 16084830, 21446440, 25735728, 32169660, 42892880, 64339320, 128678640]

約数ペア:

[(1, 128678640), (2, 64339320), (3, 42892880), (4, 32169660), (5, 25735728), (6, 21446440), (8, 16084830), (10, 12867864), (12, 10723220), (15, 8578576), (16, 8042415), (19, 6772560), (20, 6433932), (24, 5361610), (30, 4289288), (38, 3386280), (40, 3216966), (48, 2680805), (57, 2257520), (60, 2144644), (76, 1693140), (80, 1608483), (95, 1354512), (114, 1128760), (120, 1072322), (152, 846570), (190, 677256), (228, 564380), (240, 536161), (285, 451504), (304, 423285), (380, 338628), (456, 282190), (570, 225752), (760, 169314), (912, 141095), (1140, 112876), (1520, 84657), (2280, 56438), (4560, 28219)]