1555880

素因数分解:

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

素因数の和:509

約数の個数: 32

約数和(自身を含む): 3545640

約数和(自身を除く): 1989760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 401, 485, 776, 802, 970, 1604, 1940, 2005, 3208, 3880, 4010, 8020, 16040, 38897, 77794, 155588, 194485, 311176, 388970, 777940, 1555880]

約数ペア:

[(1, 1555880), (2, 777940), (4, 388970), (5, 311176), (8, 194485), (10, 155588), (20, 77794), (40, 38897), (97, 16040), (194, 8020), (388, 4010), (401, 3880), (485, 3208), (776, 2005), (802, 1940), (970, 1604)]