257029160

素因数分解:

$2^3\times 5^1\times {\mathrm{977}}^1\times {\mathrm{6577}}^1$

素因数の和:7565

約数の個数: 32

約数和(自身を含む): 578995560

約数和(自身を除く): 321966400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 977, 1954, 3908, 4885, 6577, 7816, 9770, 13154, 19540, 26308, 32885, 39080, 52616, 65770, 131540, 263080, 6425729, 12851458, 25702916, 32128645, 51405832, 64257290, 128514580, 257029160]

約数ペア:

[(1, 257029160), (2, 128514580), (4, 64257290), (5, 51405832), (8, 32128645), (10, 25702916), (20, 12851458), (40, 6425729), (977, 263080), (1954, 131540), (3908, 65770), (4885, 52616), (6577, 39080), (7816, 32885), (9770, 26308), (13154, 19540)]