256465480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{206827}}^1$

素因数の和:206869

約数の個数: 32

約数和(自身を含む): 595664640

約数和(自身を除く): 339199160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 206827, 413654, 827308, 1034135, 1654616, 2068270, 4136540, 6411637, 8273080, 12823274, 25646548, 32058185, 51293096, 64116370, 128232740, 256465480]

約数ペア:

[(1, 256465480), (2, 128232740), (4, 64116370), (5, 51293096), (8, 32058185), (10, 25646548), (20, 12823274), (31, 8273080), (40, 6411637), (62, 4136540), (124, 2068270), (155, 1654616), (248, 1034135), (310, 827308), (620, 413654), (1240, 206827)]