19936488

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 60520320

約数和(自身を除く): 40583832

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 33, 37, 39, 44, 52, 66, 74, 78, 88, 104, 111, 132, 143, 148, 156, 157, 222, 264, 286, 296, 312, 314, 407, 429, 444, 471, 481, 572, 628, 814, 858, 888, 942, 962, 1144, 1221, 1256, 1443, 1628, 1716, 1727, 1884, 1924, 2041, 2442, 2886, 3256, 3432, 3454, 3768, 3848, 4082, 4884, 5181, 5291, 5772, 5809, 6123, 6908, 8164, 9768, 10362, 10582, 11544, 11618, 12246, 13816, 15873, 16328, 17427, 20724, 21164, 22451, 23236, 24492, 31746, 34854, 41448, 42328, 44902, 46472, 48984, 63492, 63899, 67353, 69708, 75517, 89804, 126984, 127798, 134706, 139416, 151034, 179608, 191697, 226551, 255596, 269412, 302068, 383394, 453102, 511192, 538824, 604136, 766788, 830687, 906204, 1533576, 1661374, 1812408, 2492061, 3322748, 4984122, 6645496, 9968244, 19936488]

約数ペア:

[(1, 19936488), (2, 9968244), (3, 6645496), (4, 4984122), (6, 3322748), (8, 2492061), (11, 1812408), (12, 1661374), (13, 1533576), (22, 906204), (24, 830687), (26, 766788), (33, 604136), (37, 538824), (39, 511192), (44, 453102), (52, 383394), (66, 302068), (74, 269412), (78, 255596), (88, 226551), (104, 191697), (111, 179608), (132, 151034), (143, 139416), (148, 134706), (156, 127798), (157, 126984), (222, 89804), (264, 75517), (286, 69708), (296, 67353), (312, 63899), (314, 63492), (407, 48984), (429, 46472), (444, 44902), (471, 42328), (481, 41448), (572, 34854), (628, 31746), (814, 24492), (858, 23236), (888, 22451), (942, 21164), (962, 20724), (1144, 17427), (1221, 16328), (1256, 15873), (1443, 13816), (1628, 12246), (1716, 11618), (1727, 11544), (1884, 10582), (1924, 10362), (2041, 9768), (2442, 8164), (2886, 6908), (3256, 6123), (3432, 5809), (3454, 5772), (3768, 5291), (3848, 5181), (4082, 4884)]