289350440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{168227}}^1$

素因数の和:168281

約数の個数: 32

約数和(自身を含む): 666182880

約数和(自身を除く): 376832440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 168227, 336454, 672908, 841135, 1345816, 1682270, 3364540, 6729080, 7233761, 14467522, 28935044, 36168805, 57870088, 72337610, 144675220, 289350440]

約数ペア:

[(1, 289350440), (2, 144675220), (4, 72337610), (5, 57870088), (8, 36168805), (10, 28935044), (20, 14467522), (40, 7233761), (43, 6729080), (86, 3364540), (172, 1682270), (215, 1345816), (344, 841135), (430, 672908), (860, 336454), (1720, 168227)]