255780920

素因数分解:

$2^3\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{6263}}^1$

素因数の和:7295

約数の個数: 32

約数和(自身を含む): 576162720

約数和(自身を除く): 320381800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1021, 2042, 4084, 5105, 6263, 8168, 10210, 12526, 20420, 25052, 31315, 40840, 50104, 62630, 125260, 250520, 6394523, 12789046, 25578092, 31972615, 51156184, 63945230, 127890460, 255780920]

約数ペア:

[(1, 255780920), (2, 127890460), (4, 63945230), (5, 51156184), (8, 31972615), (10, 25578092), (20, 12789046), (40, 6394523), (1021, 250520), (2042, 125260), (4084, 62630), (5105, 50104), (6263, 40840), (8168, 31315), (10210, 25052), (12526, 20420)]