256322640

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{563}}^1$

素因数の和:857

約数の個数: 160

約数和(自身を含む): 913084416

約数和(自身を除く): 656761776

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 271, 280, 336, 420, 542, 560, 563, 813, 840, 1084, 1126, 1355, 1626, 1680, 1689, 1897, 2168, 2252, 2710, 2815, 3252, 3378, 3794, 3941, 4065, 4336, 4504, 5420, 5630, 5691, 6504, 6756, 7588, 7882, 8130, 8445, 9008, 9485, 10840, 11260, 11382, 11823, 13008, 13512, 15176, 15764, 16260, 16890, 18970, 19705, 21680, 22520, 22764, 23646, 27024, 28455, 30352, 31528, 32520, 33780, 37940, 39410, 45040, 45528, 47292, 56910, 59115, 63056, 65040, 67560, 75880, 78820, 91056, 94584, 113820, 118230, 135120, 151760, 152573, 157640, 189168, 227640, 236460, 305146, 315280, 455280, 457719, 472920, 610292, 762865, 915438, 945840, 1068011, 1220584, 1525730, 1830876, 2136022, 2288595, 2441168, 3051460, 3204033, 3661752, 4272044, 4577190, 5340055, 6102920, 6408066, 7323504, 8544088, 9154380, 10680110, 12205840, 12816132, 16020165, 17088176, 18308760, 21360220, 25632264, 32040330, 36617520, 42720440, 51264528, 64080660, 85440880, 128161320, 256322640]

約数ペア:

[(1, 256322640), (2, 128161320), (3, 85440880), (4, 64080660), (5, 51264528), (6, 42720440), (7, 36617520), (8, 32040330), (10, 25632264), (12, 21360220), (14, 18308760), (15, 17088176), (16, 16020165), (20, 12816132), (21, 12205840), (24, 10680110), (28, 9154380), (30, 8544088), (35, 7323504), (40, 6408066), (42, 6102920), (48, 5340055), (56, 4577190), (60, 4272044), (70, 3661752), (80, 3204033), (84, 3051460), (105, 2441168), (112, 2288595), (120, 2136022), (140, 1830876), (168, 1525730), (210, 1220584), (240, 1068011), (271, 945840), (280, 915438), (336, 762865), (420, 610292), (542, 472920), (560, 457719), (563, 455280), (813, 315280), (840, 305146), (1084, 236460), (1126, 227640), (1355, 189168), (1626, 157640), (1680, 152573), (1689, 151760), (1897, 135120), (2168, 118230), (2252, 113820), (2710, 94584), (2815, 91056), (3252, 78820), (3378, 75880), (3794, 67560), (3941, 65040), (4065, 63056), (4336, 59115), (4504, 56910), (5420, 47292), (5630, 45528), (5691, 45040), (6504, 39410), (6756, 37940), (7588, 33780), (7882, 32520), (8130, 31528), (8445, 30352), (9008, 28455), (9485, 27024), (10840, 23646), (11260, 22764), (11382, 22520), (11823, 21680), (13008, 19705), (13512, 18970), (15176, 16890), (15764, 16260)]