257836320

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{25579}}^1$

素因数の和:25607

約数の個数: 144

約数和(自身を含む): 1005600960

約数和(自身を除く): 747764640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 25579, 51158, 76737, 102316, 127895, 153474, 179053, 204632, 230211, 255790, 306948, 358106, 383685, 409264, 460422, 511580, 537159, 613896, 716212, 767370, 818528, 895265, 920844, 1023160, 1074318, 1151055, 1227792, 1432424, 1534740, 1611477, 1790530, 1841688, 2046320, 2148636, 2302110, 2455584, 2685795, 2864848, 3069480, 3222954, 3581060, 3683376, 4092640, 4297272, 4604220, 5371590, 5729696, 6138960, 6445908, 7162120, 7366752, 8057385, 8594544, 9208440, 10743180, 12277920, 12891816, 14324240, 16114770, 17189088, 18416880, 21486360, 25783632, 28648480, 32229540, 36833760, 42972720, 51567264, 64459080, 85945440, 128918160, 257836320]

約数ペア:

[(1, 257836320), (2, 128918160), (3, 85945440), (4, 64459080), (5, 51567264), (6, 42972720), (7, 36833760), (8, 32229540), (9, 28648480), (10, 25783632), (12, 21486360), (14, 18416880), (15, 17189088), (16, 16114770), (18, 14324240), (20, 12891816), (21, 12277920), (24, 10743180), (28, 9208440), (30, 8594544), (32, 8057385), (35, 7366752), (36, 7162120), (40, 6445908), (42, 6138960), (45, 5729696), (48, 5371590), (56, 4604220), (60, 4297272), (63, 4092640), (70, 3683376), (72, 3581060), (80, 3222954), (84, 3069480), (90, 2864848), (96, 2685795), (105, 2455584), (112, 2302110), (120, 2148636), (126, 2046320), (140, 1841688), (144, 1790530), (160, 1611477), (168, 1534740), (180, 1432424), (210, 1227792), (224, 1151055), (240, 1074318), (252, 1023160), (280, 920844), (288, 895265), (315, 818528), (336, 767370), (360, 716212), (420, 613896), (480, 537159), (504, 511580), (560, 460422), (630, 409264), (672, 383685), (720, 358106), (840, 306948), (1008, 255790), (1120, 230211), (1260, 204632), (1440, 179053), (1680, 153474), (2016, 127895), (2520, 102316), (3360, 76737), (5040, 51158), (10080, 25579)]