257627760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1163}}^1$

素因数の和:1263

約数の個数: 160

約数和(自身を含む): 872944128

約数和(自身を除く): 615316368

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 71, 78, 80, 104, 120, 130, 142, 156, 195, 208, 213, 240, 260, 284, 312, 355, 390, 426, 520, 568, 624, 710, 780, 852, 923, 1040, 1065, 1136, 1163, 1420, 1560, 1704, 1846, 2130, 2326, 2769, 2840, 3120, 3408, 3489, 3692, 4260, 4615, 4652, 5538, 5680, 5815, 6978, 7384, 8520, 9230, 9304, 11076, 11630, 13845, 13956, 14768, 15119, 17040, 17445, 18460, 18608, 22152, 23260, 27690, 27912, 30238, 34890, 36920, 44304, 45357, 46520, 55380, 55824, 60476, 69780, 73840, 75595, 82573, 90714, 93040, 110760, 120952, 139560, 151190, 165146, 181428, 221520, 226785, 241904, 247719, 279120, 302380, 330292, 362856, 412865, 453570, 495438, 604760, 660584, 725712, 825730, 907140, 990876, 1073449, 1209520, 1238595, 1321168, 1651460, 1814280, 1981752, 2146898, 2477190, 3220347, 3302920, 3628560, 3963504, 4293796, 4954380, 5367245, 6440694, 6605840, 8587592, 9908760, 10734490, 12881388, 16101735, 17175184, 19817520, 21468980, 25762776, 32203470, 42937960, 51525552, 64406940, 85875920, 128813880, 257627760]

約数ペア:

[(1, 257627760), (2, 128813880), (3, 85875920), (4, 64406940), (5, 51525552), (6, 42937960), (8, 32203470), (10, 25762776), (12, 21468980), (13, 19817520), (15, 17175184), (16, 16101735), (20, 12881388), (24, 10734490), (26, 9908760), (30, 8587592), (39, 6605840), (40, 6440694), (48, 5367245), (52, 4954380), (60, 4293796), (65, 3963504), (71, 3628560), (78, 3302920), (80, 3220347), (104, 2477190), (120, 2146898), (130, 1981752), (142, 1814280), (156, 1651460), (195, 1321168), (208, 1238595), (213, 1209520), (240, 1073449), (260, 990876), (284, 907140), (312, 825730), (355, 725712), (390, 660584), (426, 604760), (520, 495438), (568, 453570), (624, 412865), (710, 362856), (780, 330292), (852, 302380), (923, 279120), (1040, 247719), (1065, 241904), (1136, 226785), (1163, 221520), (1420, 181428), (1560, 165146), (1704, 151190), (1846, 139560), (2130, 120952), (2326, 110760), (2769, 93040), (2840, 90714), (3120, 82573), (3408, 75595), (3489, 73840), (3692, 69780), (4260, 60476), (4615, 55824), (4652, 55380), (5538, 46520), (5680, 45357), (5815, 44304), (6978, 36920), (7384, 34890), (8520, 30238), (9230, 27912), (9304, 27690), (11076, 23260), (11630, 22152), (13845, 18608), (13956, 18460), (14768, 17445), (15119, 17040)]