18991896

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:309

約数の個数: 128

約数和(自身を含む): 60825600

約数和(自身を除く): 41833704

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 43, 44, 56, 66, 77, 84, 86, 88, 129, 132, 154, 168, 172, 231, 239, 258, 264, 301, 308, 344, 462, 473, 478, 516, 602, 616, 717, 903, 924, 946, 956, 1032, 1204, 1419, 1434, 1673, 1806, 1848, 1892, 1912, 2408, 2629, 2838, 2868, 3311, 3346, 3612, 3784, 5019, 5258, 5676, 5736, 6622, 6692, 7224, 7887, 9933, 10038, 10277, 10516, 11352, 13244, 13384, 15774, 18403, 19866, 20076, 20554, 21032, 26488, 30831, 31548, 36806, 39732, 40152, 41108, 55209, 61662, 63096, 71939, 73612, 79464, 82216, 110418, 113047, 123324, 143878, 147224, 215817, 220836, 226094, 246648, 287756, 339141, 431634, 441672, 452188, 575512, 678282, 791329, 863268, 904376, 1356564, 1582658, 1726536, 2373987, 2713128, 3165316, 4747974, 6330632, 9495948, 18991896]

約数ペア:

[(1, 18991896), (2, 9495948), (3, 6330632), (4, 4747974), (6, 3165316), (7, 2713128), (8, 2373987), (11, 1726536), (12, 1582658), (14, 1356564), (21, 904376), (22, 863268), (24, 791329), (28, 678282), (33, 575512), (42, 452188), (43, 441672), (44, 431634), (56, 339141), (66, 287756), (77, 246648), (84, 226094), (86, 220836), (88, 215817), (129, 147224), (132, 143878), (154, 123324), (168, 113047), (172, 110418), (231, 82216), (239, 79464), (258, 73612), (264, 71939), (301, 63096), (308, 61662), (344, 55209), (462, 41108), (473, 40152), (478, 39732), (516, 36806), (602, 31548), (616, 30831), (717, 26488), (903, 21032), (924, 20554), (946, 20076), (956, 19866), (1032, 18403), (1204, 15774), (1419, 13384), (1434, 13244), (1673, 11352), (1806, 10516), (1848, 10277), (1892, 10038), (1912, 9933), (2408, 7887), (2629, 7224), (2838, 6692), (2868, 6622), (3311, 5736), (3346, 5676), (3612, 5258), (3784, 5019)]