19388240

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 47742480

約数和(自身を除く): 28354240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 61, 80, 116, 122, 137, 145, 232, 244, 274, 290, 305, 464, 488, 548, 580, 610, 685, 976, 1096, 1160, 1220, 1370, 1769, 2192, 2320, 2440, 2740, 3538, 3973, 4880, 5480, 7076, 7946, 8357, 8845, 10960, 14152, 15892, 16714, 17690, 19865, 28304, 31784, 33428, 35380, 39730, 41785, 63568, 66856, 70760, 79460, 83570, 133712, 141520, 158920, 167140, 242353, 317840, 334280, 484706, 668560, 969412, 1211765, 1938824, 2423530, 3877648, 4847060, 9694120, 19388240]

約数ペア:

[(1, 19388240), (2, 9694120), (4, 4847060), (5, 3877648), (8, 2423530), (10, 1938824), (16, 1211765), (20, 969412), (29, 668560), (40, 484706), (58, 334280), (61, 317840), (80, 242353), (116, 167140), (122, 158920), (137, 141520), (145, 133712), (232, 83570), (244, 79460), (274, 70760), (290, 66856), (305, 63568), (464, 41785), (488, 39730), (548, 35380), (580, 33428), (610, 31784), (685, 28304), (976, 19865), (1096, 17690), (1160, 16714), (1220, 15892), (1370, 14152), (1769, 10960), (2192, 8845), (2320, 8357), (2440, 7946), (2740, 7076), (3538, 5480), (3973, 4880)]