20341760

素因数分解:

$2^{10}\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1$

素因数の和:191

約数の個数: 88

約数和(自身を含む): 50847480

約数和(自身を除く): 30505720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 137, 145, 160, 232, 256, 274, 290, 320, 464, 512, 548, 580, 640, 685, 928, 1024, 1096, 1160, 1280, 1370, 1856, 2192, 2320, 2560, 2740, 3712, 3973, 4384, 4640, 5120, 5480, 7424, 7946, 8768, 9280, 10960, 14848, 15892, 17536, 18560, 19865, 21920, 29696, 31784, 35072, 37120, 39730, 43840, 63568, 70144, 74240, 79460, 87680, 127136, 140288, 148480, 158920, 175360, 254272, 317840, 350720, 508544, 635680, 701440, 1017088, 1271360, 2034176, 2542720, 4068352, 5085440, 10170880, 20341760]

約数ペア:

[(1, 20341760), (2, 10170880), (4, 5085440), (5, 4068352), (8, 2542720), (10, 2034176), (16, 1271360), (20, 1017088), (29, 701440), (32, 635680), (40, 508544), (58, 350720), (64, 317840), (80, 254272), (116, 175360), (128, 158920), (137, 148480), (145, 140288), (160, 127136), (232, 87680), (256, 79460), (274, 74240), (290, 70144), (320, 63568), (464, 43840), (512, 39730), (548, 37120), (580, 35072), (640, 31784), (685, 29696), (928, 21920), (1024, 19865), (1096, 18560), (1160, 17536), (1280, 15892), (1370, 14848), (1856, 10960), (2192, 9280), (2320, 8768), (2560, 7946), (2740, 7424), (3712, 5480), (3973, 5120), (4384, 4640)]