9870220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{499}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 22176000

約数和(自身を除く): 12305780

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 499, 860, 989, 998, 1978, 1996, 2495, 3956, 4945, 4990, 9890, 9980, 11477, 19780, 21457, 22954, 42914, 45908, 57385, 85828, 107285, 114770, 214570, 229540, 429140, 493511, 987022, 1974044, 2467555, 4935110, 9870220]

約数ペア:

[(1, 9870220), (2, 4935110), (4, 2467555), (5, 1974044), (10, 987022), (20, 493511), (23, 429140), (43, 229540), (46, 214570), (86, 114770), (92, 107285), (115, 85828), (172, 57385), (215, 45908), (230, 42914), (430, 22954), (460, 21457), (499, 19780), (860, 11477), (989, 9980), (998, 9890), (1978, 4990), (1996, 4945), (2495, 3956)]