18728808

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:207

約数の個数: 128

約数和(自身を含む): 57784320

約数和(自身を除く): 39055512

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 23, 24, 28, 37, 42, 46, 56, 69, 74, 84, 92, 111, 131, 138, 148, 161, 168, 184, 222, 259, 262, 276, 296, 322, 393, 444, 483, 518, 524, 552, 644, 777, 786, 851, 888, 917, 966, 1036, 1048, 1288, 1554, 1572, 1702, 1834, 1932, 2072, 2553, 2751, 3013, 3108, 3144, 3404, 3668, 3864, 4847, 5106, 5502, 5957, 6026, 6216, 6808, 7336, 9039, 9694, 10212, 11004, 11914, 12052, 14541, 17871, 18078, 19388, 20424, 21091, 22008, 23828, 24104, 29082, 33929, 35742, 36156, 38776, 42182, 47656, 58164, 63273, 67858, 71484, 72312, 84364, 101787, 111481, 116328, 126546, 135716, 142968, 168728, 203574, 222962, 253092, 271432, 334443, 407148, 445924, 506184, 668886, 780367, 814296, 891848, 1337772, 1560734, 2341101, 2675544, 3121468, 4682202, 6242936, 9364404, 18728808]

約数ペア:

[(1, 18728808), (2, 9364404), (3, 6242936), (4, 4682202), (6, 3121468), (7, 2675544), (8, 2341101), (12, 1560734), (14, 1337772), (21, 891848), (23, 814296), (24, 780367), (28, 668886), (37, 506184), (42, 445924), (46, 407148), (56, 334443), (69, 271432), (74, 253092), (84, 222962), (92, 203574), (111, 168728), (131, 142968), (138, 135716), (148, 126546), (161, 116328), (168, 111481), (184, 101787), (222, 84364), (259, 72312), (262, 71484), (276, 67858), (296, 63273), (322, 58164), (393, 47656), (444, 42182), (483, 38776), (518, 36156), (524, 35742), (552, 33929), (644, 29082), (777, 24104), (786, 23828), (851, 22008), (888, 21091), (917, 20424), (966, 19388), (1036, 18078), (1048, 17871), (1288, 14541), (1554, 12052), (1572, 11914), (1702, 11004), (1834, 10212), (1932, 9694), (2072, 9039), (2553, 7336), (2751, 6808), (3013, 6216), (3108, 6026), (3144, 5957), (3404, 5502), (3668, 5106), (3864, 4847)]