20195853256

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{643}}^1\times {\mathrm{1471}}^1$

素因数の和:2294

約数の個数: 64

約数和(自身を含む): 40440314880

約数和(自身を除く): 20244461624

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157, 314, 628, 643, 1256, 1286, 1471, 2572, 2669, 2942, 5144, 5338, 5884, 10676, 10931, 11768, 21352, 21862, 25007, 43724, 50014, 87448, 100028, 100951, 200056, 201902, 230947, 403804, 461894, 807608, 923788, 945853, 1716167, 1847576, 1891706, 3432334, 3783412, 3926099, 6864668, 7566824, 7852198, 13729336, 15704396, 16079501, 31408792, 32159002, 64318004, 128636008, 148498921, 296997842, 593995684, 1187991368, 2524481657, 5048963314, 10097926628, 20195853256]

約数ペア:

[(1, 20195853256), (2, 10097926628), (4, 5048963314), (8, 2524481657), (17, 1187991368), (34, 593995684), (68, 296997842), (136, 148498921), (157, 128636008), (314, 64318004), (628, 32159002), (643, 31408792), (1256, 16079501), (1286, 15704396), (1471, 13729336), (2572, 7852198), (2669, 7566824), (2942, 6864668), (5144, 3926099), (5338, 3783412), (5884, 3432334), (10676, 1891706), (10931, 1847576), (11768, 1716167), (21352, 945853), (21862, 923788), (25007, 807608), (43724, 461894), (50014, 403804), (87448, 230947), (100028, 201902), (100951, 200056)]