20987316

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:131

約数の個数: 192

約数和(自身を含む): 69672960

約数和(自身を除く): 48685644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 23, 27, 28, 34, 36, 42, 46, 51, 54, 63, 68, 69, 71, 84, 92, 102, 108, 119, 126, 138, 142, 153, 161, 189, 204, 207, 213, 238, 252, 276, 284, 306, 322, 357, 378, 391, 414, 426, 459, 476, 483, 497, 612, 621, 639, 644, 714, 756, 782, 828, 852, 918, 966, 994, 1071, 1173, 1207, 1242, 1278, 1428, 1449, 1491, 1564, 1633, 1836, 1917, 1932, 1988, 2142, 2346, 2414, 2484, 2556, 2737, 2898, 2982, 3213, 3266, 3519, 3621, 3834, 4284, 4347, 4473, 4692, 4828, 4899, 5474, 5796, 5964, 6426, 6532, 7038, 7242, 7668, 8211, 8449, 8694, 8946, 9798, 10557, 10863, 10948, 11431, 12852, 13419, 14076, 14484, 14697, 16422, 16898, 17388, 17892, 19596, 21114, 21726, 22862, 24633, 25347, 26838, 27761, 29394, 32589, 32844, 33796, 34293, 42228, 43452, 44091, 45724, 49266, 50694, 53676, 55522, 58788, 65178, 68586, 73899, 76041, 83283, 88182, 98532, 101388, 102879, 111044, 130356, 137172, 147798, 152082, 166566, 176364, 194327, 205758, 228123, 249849, 295596, 304164, 308637, 333132, 388654, 411516, 456246, 499698, 582981, 617274, 749547, 777308, 912492, 999396, 1165962, 1234548, 1499094, 1748943, 2331924, 2998188, 3497886, 5246829, 6995772, 10493658, 20987316]

約数ペア:

[(1, 20987316), (2, 10493658), (3, 6995772), (4, 5246829), (6, 3497886), (7, 2998188), (9, 2331924), (12, 1748943), (14, 1499094), (17, 1234548), (18, 1165962), (21, 999396), (23, 912492), (27, 777308), (28, 749547), (34, 617274), (36, 582981), (42, 499698), (46, 456246), (51, 411516), (54, 388654), (63, 333132), (68, 308637), (69, 304164), (71, 295596), (84, 249849), (92, 228123), (102, 205758), (108, 194327), (119, 176364), (126, 166566), (138, 152082), (142, 147798), (153, 137172), (161, 130356), (189, 111044), (204, 102879), (207, 101388), (213, 98532), (238, 88182), (252, 83283), (276, 76041), (284, 73899), (306, 68586), (322, 65178), (357, 58788), (378, 55522), (391, 53676), (414, 50694), (426, 49266), (459, 45724), (476, 44091), (483, 43452), (497, 42228), (612, 34293), (621, 33796), (639, 32844), (644, 32589), (714, 29394), (756, 27761), (782, 26838), (828, 25347), (852, 24633), (918, 22862), (966, 21726), (994, 21114), (1071, 19596), (1173, 17892), (1207, 17388), (1242, 16898), (1278, 16422), (1428, 14697), (1449, 14484), (1491, 14076), (1564, 13419), (1633, 12852), (1836, 11431), (1917, 10948), (1932, 10863), (1988, 10557), (2142, 9798), (2346, 8946), (2414, 8694), (2484, 8449), (2556, 8211), (2737, 7668), (2898, 7242), (2982, 7038), (3213, 6532), (3266, 6426), (3519, 5964), (3621, 5796), (3834, 5474), (4284, 4899), (4347, 4828), (4473, 4692)]