15388840

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 37065600

約数和(自身を除く): 21676760

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 389, 430, 460, 778, 860, 920, 989, 1556, 1720, 1945, 1978, 3112, 3890, 3956, 4945, 7780, 7912, 8947, 9890, 15560, 16727, 17894, 19780, 33454, 35788, 39560, 44735, 66908, 71576, 83635, 89470, 133816, 167270, 178940, 334540, 357880, 384721, 669080, 769442, 1538884, 1923605, 3077768, 3847210, 7694420, 15388840]

約数ペア:

[(1, 15388840), (2, 7694420), (4, 3847210), (5, 3077768), (8, 1923605), (10, 1538884), (20, 769442), (23, 669080), (40, 384721), (43, 357880), (46, 334540), (86, 178940), (92, 167270), (115, 133816), (172, 89470), (184, 83635), (215, 71576), (230, 66908), (344, 44735), (389, 39560), (430, 35788), (460, 33454), (778, 19780), (860, 17894), (920, 16727), (989, 15560), (1556, 9890), (1720, 8947), (1945, 7912), (1978, 7780), (3112, 4945), (3890, 3956)]