20085771520

素因数分解:

$2^8\times 5^1\times {\mathrm{457}}^1\times {\mathrm{34337}}^1$

素因数の和:34815

約数の個数: 72

約数和(自身を含む): 48218381064

約数和(自身を除く): 28132609544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 457, 640, 914, 1280, 1828, 2285, 3656, 4570, 7312, 9140, 14624, 18280, 29248, 34337, 36560, 58496, 68674, 73120, 116992, 137348, 146240, 171685, 274696, 292480, 343370, 549392, 584960, 686740, 1098784, 1373480, 2197568, 2746960, 4395136, 5493920, 8790272, 10987840, 15692009, 21975680, 31384018, 43951360, 62768036, 78460045, 125536072, 156920090, 251072144, 313840180, 502144288, 627680360, 1004288576, 1255360720, 2008577152, 2510721440, 4017154304, 5021442880, 10042885760, 20085771520]

約数ペア:

[(1, 20085771520), (2, 10042885760), (4, 5021442880), (5, 4017154304), (8, 2510721440), (10, 2008577152), (16, 1255360720), (20, 1004288576), (32, 627680360), (40, 502144288), (64, 313840180), (80, 251072144), (128, 156920090), (160, 125536072), (256, 78460045), (320, 62768036), (457, 43951360), (640, 31384018), (914, 21975680), (1280, 15692009), (1828, 10987840), (2285, 8790272), (3656, 5493920), (4570, 4395136), (7312, 2746960), (9140, 2197568), (14624, 1373480), (18280, 1098784), (29248, 686740), (34337, 584960), (36560, 549392), (58496, 343370), (68674, 292480), (73120, 274696), (116992, 171685), (137348, 146240)]