257711580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{479}}^1$

素因数の和:569

約数の個数: 216

約数和(自身を含む): 926190720

約数和(自身を除く): 668479140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 61, 63, 70, 84, 90, 98, 105, 122, 126, 140, 147, 180, 183, 196, 210, 244, 245, 252, 294, 305, 315, 366, 420, 427, 441, 479, 490, 549, 588, 610, 630, 732, 735, 854, 882, 915, 958, 980, 1098, 1220, 1260, 1281, 1437, 1470, 1708, 1764, 1830, 1916, 2135, 2196, 2205, 2395, 2562, 2745, 2874, 2940, 2989, 3353, 3660, 3843, 4270, 4311, 4410, 4790, 5124, 5490, 5748, 5978, 6405, 6706, 7185, 7686, 8540, 8622, 8820, 8967, 9580, 10059, 10980, 11956, 12810, 13412, 14370, 14945, 15372, 16765, 17244, 17934, 19215, 20118, 21555, 23471, 25620, 26901, 28740, 29219, 29890, 30177, 33530, 35868, 38430, 40236, 43110, 44835, 46942, 50295, 53802, 58438, 59780, 60354, 67060, 70413, 76860, 86220, 87657, 89670, 93884, 100590, 107604, 116876, 117355, 120708, 134505, 140826, 146095, 150885, 175314, 179340, 201180, 204533, 211239, 234710, 262971, 269010, 281652, 292190, 301770, 350628, 352065, 409066, 422478, 438285, 469420, 525942, 538020, 584380, 603540, 613599, 704130, 818132, 844956, 876570, 1022665, 1051884, 1056195, 1227198, 1314855, 1408260, 1431731, 1753140, 1840797, 2045330, 2112390, 2454396, 2629710, 2863462, 3067995, 3681594, 4090660, 4224780, 4295193, 5259420, 5726924, 6135990, 7158655, 7363188, 8590386, 9203985, 12271980, 12885579, 14317310, 17180772, 18407970, 21475965, 25771158, 28634620, 36815940, 42951930, 51542316, 64427895, 85903860, 128855790, 257711580]

約数ペア:

[(1, 257711580), (2, 128855790), (3, 85903860), (4, 64427895), (5, 51542316), (6, 42951930), (7, 36815940), (9, 28634620), (10, 25771158), (12, 21475965), (14, 18407970), (15, 17180772), (18, 14317310), (20, 12885579), (21, 12271980), (28, 9203985), (30, 8590386), (35, 7363188), (36, 7158655), (42, 6135990), (45, 5726924), (49, 5259420), (60, 4295193), (61, 4224780), (63, 4090660), (70, 3681594), (84, 3067995), (90, 2863462), (98, 2629710), (105, 2454396), (122, 2112390), (126, 2045330), (140, 1840797), (147, 1753140), (180, 1431731), (183, 1408260), (196, 1314855), (210, 1227198), (244, 1056195), (245, 1051884), (252, 1022665), (294, 876570), (305, 844956), (315, 818132), (366, 704130), (420, 613599), (427, 603540), (441, 584380), (479, 538020), (490, 525942), (549, 469420), (588, 438285), (610, 422478), (630, 409066), (732, 352065), (735, 350628), (854, 301770), (882, 292190), (915, 281652), (958, 269010), (980, 262971), (1098, 234710), (1220, 211239), (1260, 204533), (1281, 201180), (1437, 179340), (1470, 175314), (1708, 150885), (1764, 146095), (1830, 140826), (1916, 134505), (2135, 120708), (2196, 117355), (2205, 116876), (2395, 107604), (2562, 100590), (2745, 93884), (2874, 89670), (2940, 87657), (2989, 86220), (3353, 76860), (3660, 70413), (3843, 67060), (4270, 60354), (4311, 59780), (4410, 58438), (4790, 53802), (5124, 50295), (5490, 46942), (5748, 44835), (5978, 43110), (6405, 40236), (6706, 38430), (7185, 35868), (7686, 33530), (8540, 30177), (8622, 29890), (8820, 29219), (8967, 28740), (9580, 26901), (10059, 25620), (10980, 23471), (11956, 21555), (12810, 20118), (13412, 19215), (14370, 17934), (14945, 17244), (15372, 16765)]