128387280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{76421}}^1$

素因数の和:76444

約数の個数: 80

約数和(自身を含む): 454863744

約数和(自身を除く): 326476464

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 76421, 152842, 229263, 305684, 382105, 458526, 534947, 611368, 764210, 917052, 1069894, 1146315, 1222736, 1528420, 1604841, 1834104, 2139788, 2292630, 2674735, 3056840, 3209682, 3668208, 4279576, 4585260, 5349470, 6113680, 6419364, 8024205, 8559152, 9170520, 10698940, 12838728, 16048410, 18341040, 21397880, 25677456, 32096820, 42795760, 64193640, 128387280]

約数ペア:

[(1, 128387280), (2, 64193640), (3, 42795760), (4, 32096820), (5, 25677456), (6, 21397880), (7, 18341040), (8, 16048410), (10, 12838728), (12, 10698940), (14, 9170520), (15, 8559152), (16, 8024205), (20, 6419364), (21, 6113680), (24, 5349470), (28, 4585260), (30, 4279576), (35, 3668208), (40, 3209682), (42, 3056840), (48, 2674735), (56, 2292630), (60, 2139788), (70, 1834104), (80, 1604841), (84, 1528420), (105, 1222736), (112, 1146315), (120, 1069894), (140, 917052), (168, 764210), (210, 611368), (240, 534947), (280, 458526), (336, 382105), (420, 305684), (560, 229263), (840, 152842), (1680, 76421)]