261440520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:216

約数の個数: 256

約数和(自身を含む): 904193280

約数和(自身を除く): 642752760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 37, 40, 44, 53, 55, 60, 66, 74, 88, 101, 106, 110, 111, 120, 132, 148, 159, 165, 185, 202, 212, 220, 222, 264, 265, 296, 303, 318, 330, 370, 404, 407, 424, 440, 444, 505, 530, 555, 583, 606, 636, 660, 740, 795, 808, 814, 888, 1010, 1060, 1110, 1111, 1166, 1212, 1221, 1272, 1320, 1480, 1515, 1590, 1628, 1749, 1961, 2020, 2035, 2120, 2220, 2222, 2332, 2424, 2442, 2915, 3030, 3180, 3256, 3333, 3498, 3737, 3922, 4040, 4070, 4440, 4444, 4664, 4884, 5353, 5555, 5830, 5883, 6060, 6105, 6360, 6666, 6996, 7474, 7844, 8140, 8745, 8888, 9768, 9805, 10706, 11110, 11211, 11660, 11766, 12120, 12210, 13332, 13992, 14948, 15688, 16059, 16280, 16665, 17490, 18685, 19610, 21412, 21571, 22220, 22422, 23320, 23532, 24420, 26664, 26765, 29415, 29896, 32118, 33330, 34980, 37370, 39220, 41107, 42824, 43142, 44440, 44844, 47064, 48840, 53530, 56055, 58830, 58883, 64236, 64713, 66660, 69960, 74740, 78440, 80295, 82214, 86284, 89688, 107060, 107855, 112110, 117660, 117766, 123321, 128472, 129426, 133320, 149480, 160590, 164428, 172568, 176649, 198061, 205535, 214120, 215710, 224220, 235320, 235532, 246642, 258852, 294415, 321180, 323565, 328856, 353298, 396122, 411070, 431420, 448440, 471064, 493284, 517704, 588830, 594183, 616605, 642360, 647130, 706596, 792244, 822140, 862840, 883245, 986568, 990305, 1177660, 1188366, 1233210, 1294260, 1413192, 1584488, 1644280, 1766490, 1980610, 2178671, 2355320, 2376732, 2466420, 2588520, 2970915, 3532980, 3961220, 4357342, 4753464, 4932840, 5941830, 6536013, 7065960, 7922440, 8714684, 10893355, 11883660, 13072026, 17429368, 21786710, 23767320, 26144052, 32680065, 43573420, 52288104, 65360130, 87146840, 130720260, 261440520]

約数ペア:

[(1, 261440520), (2, 130720260), (3, 87146840), (4, 65360130), (5, 52288104), (6, 43573420), (8, 32680065), (10, 26144052), (11, 23767320), (12, 21786710), (15, 17429368), (20, 13072026), (22, 11883660), (24, 10893355), (30, 8714684), (33, 7922440), (37, 7065960), (40, 6536013), (44, 5941830), (53, 4932840), (55, 4753464), (60, 4357342), (66, 3961220), (74, 3532980), (88, 2970915), (101, 2588520), (106, 2466420), (110, 2376732), (111, 2355320), (120, 2178671), (132, 1980610), (148, 1766490), (159, 1644280), (165, 1584488), (185, 1413192), (202, 1294260), (212, 1233210), (220, 1188366), (222, 1177660), (264, 990305), (265, 986568), (296, 883245), (303, 862840), (318, 822140), (330, 792244), (370, 706596), (404, 647130), (407, 642360), (424, 616605), (440, 594183), (444, 588830), (505, 517704), (530, 493284), (555, 471064), (583, 448440), (606, 431420), (636, 411070), (660, 396122), (740, 353298), (795, 328856), (808, 323565), (814, 321180), (888, 294415), (1010, 258852), (1060, 246642), (1110, 235532), (1111, 235320), (1166, 224220), (1212, 215710), (1221, 214120), (1272, 205535), (1320, 198061), (1480, 176649), (1515, 172568), (1590, 164428), (1628, 160590), (1749, 149480), (1961, 133320), (2020, 129426), (2035, 128472), (2120, 123321), (2220, 117766), (2222, 117660), (2332, 112110), (2424, 107855), (2442, 107060), (2915, 89688), (3030, 86284), (3180, 82214), (3256, 80295), (3333, 78440), (3498, 74740), (3737, 69960), (3922, 66660), (4040, 64713), (4070, 64236), (4440, 58883), (4444, 58830), (4664, 56055), (4884, 53530), (5353, 48840), (5555, 47064), (5830, 44844), (5883, 44440), (6060, 43142), (6105, 42824), (6360, 41107), (6666, 39220), (6996, 37370), (7474, 34980), (7844, 33330), (8140, 32118), (8745, 29896), (8888, 29415), (9768, 26765), (9805, 26664), (10706, 24420), (11110, 23532), (11211, 23320), (11660, 22422), (11766, 22220), (12120, 21571), (12210, 21412), (13332, 19610), (13992, 18685), (14948, 17490), (15688, 16665), (16059, 16280)]