256700920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{10301}}^1$

素因数の和:10408

約数の個数: 64

約数和(自身を含む): 667569600

約数和(自身を除く): 410868680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 890, 1246, 1780, 2492, 3115, 3560, 4984, 6230, 10301, 12460, 20602, 24920, 41204, 51505, 72107, 82408, 103010, 144214, 206020, 288428, 360535, 412040, 576856, 721070, 916789, 1442140, 1833578, 2884280, 3667156, 4583945, 6417523, 7334312, 9167890, 12835046, 18335780, 25670092, 32087615, 36671560, 51340184, 64175230, 128350460, 256700920]

約数ペア:

[(1, 256700920), (2, 128350460), (4, 64175230), (5, 51340184), (7, 36671560), (8, 32087615), (10, 25670092), (14, 18335780), (20, 12835046), (28, 9167890), (35, 7334312), (40, 6417523), (56, 4583945), (70, 3667156), (89, 2884280), (140, 1833578), (178, 1442140), (280, 916789), (356, 721070), (445, 576856), (623, 412040), (712, 360535), (890, 288428), (1246, 206020), (1780, 144214), (2492, 103010), (3115, 82408), (3560, 72107), (4984, 51505), (6230, 41204), (10301, 24920), (12460, 20602)]