40003984

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{19687}}^1$

素因数の和:19822

約数の個数: 20

約数和(自身を含む): 78121984

約数和(自身を除く): 38118000

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 19687, 39374, 78748, 157496, 314992, 2500249, 5000498, 10000996, 20001992, 40003984]

約数ペア:

[(1, 40003984), (2, 20001992), (4, 10000996), (8, 5000498), (16, 2500249), (127, 314992), (254, 157496), (508, 78748), (1016, 39374), (2032, 19687)]