668811520

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40193}}^1$

素因数の和:40227

約数の個数: 72

約数和(自身を含む): 1725287256

約数和(自身を除く): 1056475736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 16640, 40193, 80386, 160772, 200965, 321544, 401930, 522509, 643088, 803860, 1045018, 1286176, 1607720, 2090036, 2572352, 2612545, 3215440, 4180072, 5144704, 5225090, 6430880, 8360144, 10289408, 10450180, 12861760, 16720288, 20900360, 25723520, 33440576, 41800720, 51447040, 66881152, 83601440, 133762304, 167202880, 334405760, 668811520]

約数ペア:

[(1, 668811520), (2, 334405760), (4, 167202880), (5, 133762304), (8, 83601440), (10, 66881152), (13, 51447040), (16, 41800720), (20, 33440576), (26, 25723520), (32, 20900360), (40, 16720288), (52, 12861760), (64, 10450180), (65, 10289408), (80, 8360144), (104, 6430880), (128, 5225090), (130, 5144704), (160, 4180072), (208, 3215440), (256, 2612545), (260, 2572352), (320, 2090036), (416, 1607720), (520, 1286176), (640, 1045018), (832, 803860), (1040, 643088), (1280, 522509), (1664, 401930), (2080, 321544), (3328, 200965), (4160, 160772), (8320, 80386), (16640, 40193)]