257147280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{331}}^1$

素因数の和:446

約数の個数: 240

約数和(自身を含む): 944064576

約数和(自身を除く): 686917296

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 83, 90, 104, 117, 120, 130, 144, 156, 166, 180, 195, 208, 234, 240, 249, 260, 312, 331, 332, 360, 390, 415, 468, 498, 520, 585, 624, 662, 664, 720, 747, 780, 830, 936, 993, 996, 1040, 1079, 1170, 1245, 1324, 1328, 1494, 1560, 1655, 1660, 1872, 1986, 1992, 2158, 2340, 2490, 2648, 2979, 2988, 3120, 3237, 3310, 3320, 3735, 3972, 3984, 4303, 4316, 4680, 4965, 4980, 5296, 5395, 5958, 5976, 6474, 6620, 6640, 7470, 7944, 8606, 8632, 9360, 9711, 9930, 9960, 10790, 11916, 11952, 12909, 12948, 13240, 14895, 14940, 15888, 16185, 17212, 17264, 19422, 19860, 19920, 21515, 21580, 23832, 25818, 25896, 26480, 27473, 29790, 29880, 32370, 34424, 38727, 38844, 39720, 43030, 43160, 47664, 48555, 51636, 51792, 54946, 59580, 59760, 64545, 64740, 68848, 77454, 77688, 79440, 82419, 86060, 86320, 97110, 103272, 109892, 119160, 129090, 129480, 137365, 154908, 155376, 164838, 172120, 193635, 194220, 206544, 219784, 238320, 247257, 258180, 258960, 274730, 309816, 329676, 344240, 357149, 387270, 388440, 412095, 439568, 494514, 516360, 549460, 619632, 659352, 714298, 774540, 776880, 824190, 989028, 1032720, 1071447, 1098920, 1236285, 1318704, 1428596, 1549080, 1648380, 1785745, 1978056, 2142894, 2197840, 2472570, 2857192, 3098160, 3214341, 3296760, 3571490, 3956112, 4285788, 4945140, 5357235, 5714384, 6428682, 6593520, 7142980, 8571576, 9890280, 10714470, 12857364, 14285960, 16071705, 17143152, 19780560, 21428940, 25714728, 28571920, 32143410, 42857880, 51429456, 64286820, 85715760, 128573640, 257147280]

約数ペア:

[(1, 257147280), (2, 128573640), (3, 85715760), (4, 64286820), (5, 51429456), (6, 42857880), (8, 32143410), (9, 28571920), (10, 25714728), (12, 21428940), (13, 19780560), (15, 17143152), (16, 16071705), (18, 14285960), (20, 12857364), (24, 10714470), (26, 9890280), (30, 8571576), (36, 7142980), (39, 6593520), (40, 6428682), (45, 5714384), (48, 5357235), (52, 4945140), (60, 4285788), (65, 3956112), (72, 3571490), (78, 3296760), (80, 3214341), (83, 3098160), (90, 2857192), (104, 2472570), (117, 2197840), (120, 2142894), (130, 1978056), (144, 1785745), (156, 1648380), (166, 1549080), (180, 1428596), (195, 1318704), (208, 1236285), (234, 1098920), (240, 1071447), (249, 1032720), (260, 989028), (312, 824190), (331, 776880), (332, 774540), (360, 714298), (390, 659352), (415, 619632), (468, 549460), (498, 516360), (520, 494514), (585, 439568), (624, 412095), (662, 388440), (664, 387270), (720, 357149), (747, 344240), (780, 329676), (830, 309816), (936, 274730), (993, 258960), (996, 258180), (1040, 247257), (1079, 238320), (1170, 219784), (1245, 206544), (1324, 194220), (1328, 193635), (1494, 172120), (1560, 164838), (1655, 155376), (1660, 154908), (1872, 137365), (1986, 129480), (1992, 129090), (2158, 119160), (2340, 109892), (2490, 103272), (2648, 97110), (2979, 86320), (2988, 86060), (3120, 82419), (3237, 79440), (3310, 77688), (3320, 77454), (3735, 68848), (3972, 64740), (3984, 64545), (4303, 59760), (4316, 59580), (4680, 54946), (4965, 51792), (4980, 51636), (5296, 48555), (5395, 47664), (5958, 43160), (5976, 43030), (6474, 39720), (6620, 38844), (6640, 38727), (7470, 34424), (7944, 32370), (8606, 29880), (8632, 29790), (9360, 27473), (9711, 26480), (9930, 25896), (9960, 25818), (10790, 23832), (11916, 21580), (11952, 21515), (12909, 19920), (12948, 19860), (13240, 19422), (14895, 17264), (14940, 17212), (15888, 16185)]