21772040

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^2$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 51048900

約数和(自身を除く): 29276860

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 137, 145, 232, 274, 290, 548, 580, 685, 1096, 1160, 1370, 2740, 3973, 5480, 7946, 15892, 18769, 19865, 31784, 37538, 39730, 75076, 79460, 93845, 150152, 158920, 187690, 375380, 544301, 750760, 1088602, 2177204, 2721505, 4354408, 5443010, 10886020, 21772040]

約数ペア:

[(1, 21772040), (2, 10886020), (4, 5443010), (5, 4354408), (8, 2721505), (10, 2177204), (20, 1088602), (29, 750760), (40, 544301), (58, 375380), (116, 187690), (137, 158920), (145, 150152), (232, 93845), (274, 79460), (290, 75076), (548, 39730), (580, 37538), (685, 31784), (1096, 19865), (1160, 18769), (1370, 15892), (2740, 7946), (3973, 5480)]