807700

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 36

約数和(自身を含む): 1804572

約数和(自身を除く): 996872

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 197, 205, 394, 410, 788, 820, 985, 1025, 1970, 2050, 3940, 4100, 4925, 8077, 9850, 16154, 19700, 32308, 40385, 80770, 161540, 201925, 403850, 807700]

約数ペア:

[(1, 807700), (2, 403850), (4, 201925), (5, 161540), (10, 80770), (20, 40385), (25, 32308), (41, 19700), (50, 16154), (82, 9850), (100, 8077), (164, 4925), (197, 4100), (205, 3940), (394, 2050), (410, 1970), (788, 1025), (820, 985)]