261362178

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:154

約数の個数: 216

約数和(自身を含む): 756887040

約数和(自身を除く): 495524862

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 31, 33, 42, 49, 62, 63, 66, 77, 79, 93, 98, 99, 121, 126, 147, 154, 158, 186, 198, 217, 231, 237, 242, 279, 294, 341, 363, 434, 441, 462, 474, 539, 553, 558, 651, 682, 693, 711, 726, 847, 869, 882, 1023, 1078, 1089, 1106, 1302, 1386, 1422, 1519, 1617, 1659, 1694, 1738, 1953, 2046, 2178, 2387, 2449, 2541, 2607, 3038, 3069, 3234, 3318, 3751, 3871, 3906, 4557, 4774, 4851, 4898, 4977, 5082, 5214, 5929, 6083, 6138, 7161, 7347, 7502, 7623, 7742, 7821, 9114, 9559, 9702, 9954, 11253, 11613, 11858, 12166, 13671, 14322, 14694, 15246, 15642, 16709, 17143, 17787, 18249, 19118, 21483, 22041, 22506, 23226, 26257, 26939, 27342, 28677, 33418, 33759, 34286, 34839, 35574, 36498, 42581, 42966, 44082, 50127, 51429, 52514, 53361, 53878, 54747, 57354, 66913, 67518, 69678, 78771, 80817, 85162, 86031, 100254, 102858, 106722, 109494, 120001, 127743, 133826, 150381, 154287, 157542, 161634, 172062, 183799, 188573, 200739, 236313, 240002, 242451, 255486, 296329, 300762, 308574, 360003, 367598, 377146, 383229, 401478, 468391, 472626, 484902, 551397, 565719, 592658, 602217, 720006, 766458, 888987, 936782, 1080009, 1102794, 1131438, 1204434, 1320011, 1405173, 1654191, 1697157, 1777974, 2074303, 2160018, 2640022, 2666961, 2810346, 3308382, 3394314, 3960033, 4148606, 4215519, 5333922, 6222909, 7920066, 8431038, 11880099, 12445818, 14520121, 18668727, 23760198, 29040242, 37337454, 43560363, 87120726, 130681089, 261362178]

約数ペア:

[(1, 261362178), (2, 130681089), (3, 87120726), (6, 43560363), (7, 37337454), (9, 29040242), (11, 23760198), (14, 18668727), (18, 14520121), (21, 12445818), (22, 11880099), (31, 8431038), (33, 7920066), (42, 6222909), (49, 5333922), (62, 4215519), (63, 4148606), (66, 3960033), (77, 3394314), (79, 3308382), (93, 2810346), (98, 2666961), (99, 2640022), (121, 2160018), (126, 2074303), (147, 1777974), (154, 1697157), (158, 1654191), (186, 1405173), (198, 1320011), (217, 1204434), (231, 1131438), (237, 1102794), (242, 1080009), (279, 936782), (294, 888987), (341, 766458), (363, 720006), (434, 602217), (441, 592658), (462, 565719), (474, 551397), (539, 484902), (553, 472626), (558, 468391), (651, 401478), (682, 383229), (693, 377146), (711, 367598), (726, 360003), (847, 308574), (869, 300762), (882, 296329), (1023, 255486), (1078, 242451), (1089, 240002), (1106, 236313), (1302, 200739), (1386, 188573), (1422, 183799), (1519, 172062), (1617, 161634), (1659, 157542), (1694, 154287), (1738, 150381), (1953, 133826), (2046, 127743), (2178, 120001), (2387, 109494), (2449, 106722), (2541, 102858), (2607, 100254), (3038, 86031), (3069, 85162), (3234, 80817), (3318, 78771), (3751, 69678), (3871, 67518), (3906, 66913), (4557, 57354), (4774, 54747), (4851, 53878), (4898, 53361), (4977, 52514), (5082, 51429), (5214, 50127), (5929, 44082), (6083, 42966), (6138, 42581), (7161, 36498), (7347, 35574), (7502, 34839), (7623, 34286), (7742, 33759), (7821, 33418), (9114, 28677), (9559, 27342), (9702, 26939), (9954, 26257), (11253, 23226), (11613, 22506), (11858, 22041), (12166, 21483), (13671, 19118), (14322, 18249), (14694, 17787), (15246, 17143), (15642, 16709)]