19936840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6473}}^1$

素因数の和:6502

約数の個数: 64

約数和(自身を含む): 55935360

約数和(自身を除く): 35998520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6473, 12946, 25892, 32365, 45311, 51784, 64730, 71203, 90622, 129460, 142406, 181244, 226555, 258920, 284812, 356015, 362488, 453110, 498421, 569624, 712030, 906220, 996842, 1424060, 1812440, 1993684, 2492105, 2848120, 3987368, 4984210, 9968420, 19936840]

約数ペア:

[(1, 19936840), (2, 9968420), (4, 4984210), (5, 3987368), (7, 2848120), (8, 2492105), (10, 1993684), (11, 1812440), (14, 1424060), (20, 996842), (22, 906220), (28, 712030), (35, 569624), (40, 498421), (44, 453110), (55, 362488), (56, 356015), (70, 284812), (77, 258920), (88, 226555), (110, 181244), (140, 142406), (154, 129460), (220, 90622), (280, 71203), (308, 64730), (385, 51784), (440, 45311), (616, 32365), (770, 25892), (1540, 12946), (3080, 6473)]