1281840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{109}}^1$

素因数の和:139

約数の個数: 120

約数和(自身を含む): 4664880

約数和(自身を除く): 3383040

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, 49, 56, 60, 70, 80, 84, 98, 105, 109, 112, 120, 140, 147, 168, 196, 210, 218, 240, 245, 280, 294, 327, 336, 392, 420, 436, 490, 545, 560, 588, 654, 735, 763, 784, 840, 872, 980, 1090, 1176, 1308, 1470, 1526, 1635, 1680, 1744, 1960, 2180, 2289, 2352, 2616, 2940, 3052, 3270, 3815, 3920, 4360, 4578, 5232, 5341, 5880, 6104, 6540, 7630, 8720, 9156, 10682, 11445, 11760, 12208, 13080, 15260, 16023, 18312, 21364, 22890, 26160, 26705, 30520, 32046, 36624, 42728, 45780, 53410, 61040, 64092, 80115, 85456, 91560, 106820, 128184, 160230, 183120, 213640, 256368, 320460, 427280, 640920, 1281840]

約数ペア:

[(1, 1281840), (2, 640920), (3, 427280), (4, 320460), (5, 256368), (6, 213640), (7, 183120), (8, 160230), (10, 128184), (12, 106820), (14, 91560), (15, 85456), (16, 80115), (20, 64092), (21, 61040), (24, 53410), (28, 45780), (30, 42728), (35, 36624), (40, 32046), (42, 30520), (48, 26705), (49, 26160), (56, 22890), (60, 21364), (70, 18312), (80, 16023), (84, 15260), (98, 13080), (105, 12208), (109, 11760), (112, 11445), (120, 10682), (140, 9156), (147, 8720), (168, 7630), (196, 6540), (210, 6104), (218, 5880), (240, 5341), (245, 5232), (280, 4578), (294, 4360), (327, 3920), (336, 3815), (392, 3270), (420, 3052), (436, 2940), (490, 2616), (545, 2352), (560, 2289), (588, 2180), (654, 1960), (735, 1744), (763, 1680), (784, 1635), (840, 1526), (872, 1470), (980, 1308), (1090, 1176)]