256013080

素因数分解:

$2^3\times 5^1\times {\mathrm{977}}^1\times {\mathrm{6551}}^1$

素因数の和:7539

約数の個数: 32

約数和(自身を含む): 576707040

約数和(自身を除く): 320693960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 977, 1954, 3908, 4885, 6551, 7816, 9770, 13102, 19540, 26204, 32755, 39080, 52408, 65510, 131020, 262040, 6400327, 12800654, 25601308, 32001635, 51202616, 64003270, 128006540, 256013080]

約数ペア:

[(1, 256013080), (2, 128006540), (4, 64003270), (5, 51202616), (8, 32001635), (10, 25601308), (20, 12800654), (40, 6400327), (977, 262040), (1954, 131020), (3908, 65510), (4885, 52408), (6551, 39080), (7816, 32755), (9770, 26204), (13102, 19540)]