1640370020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{941}}^1\times {\mathrm{2027}}^1$

素因数の和:3020

約数の個数: 48

約数和(自身を含む): 3530374848

約数和(自身を除く): 1890004828

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 941, 1882, 2027, 3764, 4054, 4705, 8108, 9410, 10135, 18820, 20270, 40463, 40540, 80926, 87161, 161852, 174322, 202315, 348644, 404630, 435805, 809260, 871610, 1743220, 1907407, 3814814, 7629628, 9537035, 19074070, 38148140, 82018501, 164037002, 328074004, 410092505, 820185010, 1640370020]

約数ペア:

[(1, 1640370020), (2, 820185010), (4, 410092505), (5, 328074004), (10, 164037002), (20, 82018501), (43, 38148140), (86, 19074070), (172, 9537035), (215, 7629628), (430, 3814814), (860, 1907407), (941, 1743220), (1882, 871610), (2027, 809260), (3764, 435805), (4054, 404630), (4705, 348644), (8108, 202315), (9410, 174322), (10135, 161852), (18820, 87161), (20270, 80926), (40463, 40540)]