7779400

素因数分解:

$2^3\times 5^2\times {\mathrm{97}}^1\times {\mathrm{401}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 18319140

約数和(自身を除く): 10539740

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 97, 100, 194, 200, 388, 401, 485, 776, 802, 970, 1604, 1940, 2005, 2425, 3208, 3880, 4010, 4850, 8020, 9700, 10025, 16040, 19400, 20050, 38897, 40100, 77794, 80200, 155588, 194485, 311176, 388970, 777940, 972425, 1555880, 1944850, 3889700, 7779400]

約数ペア:

[(1, 7779400), (2, 3889700), (4, 1944850), (5, 1555880), (8, 972425), (10, 777940), (20, 388970), (25, 311176), (40, 194485), (50, 155588), (97, 80200), (100, 77794), (194, 40100), (200, 38897), (388, 20050), (401, 19400), (485, 16040), (776, 10025), (802, 9700), (970, 8020), (1604, 4850), (1940, 4010), (2005, 3880), (2425, 3208)]