389628040

素因数分解:

$2^3\times 5^1\times {\mathrm{1973}}^1\times {\mathrm{4937}}^1$

素因数の和:6921

約数の個数: 32

約数和(自身を含む): 877285080

約数和(自身を除く): 487657040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1973, 3946, 4937, 7892, 9865, 9874, 15784, 19730, 19748, 24685, 39460, 39496, 49370, 78920, 98740, 197480, 9740701, 19481402, 38962804, 48703505, 77925608, 97407010, 194814020, 389628040]

約数ペア:

[(1, 389628040), (2, 194814020), (4, 97407010), (5, 77925608), (8, 48703505), (10, 38962804), (20, 19481402), (40, 9740701), (1973, 197480), (3946, 98740), (4937, 78920), (7892, 49370), (9865, 39496), (9874, 39460), (15784, 24685), (19730, 19748)]