221243280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{227}}^1$

素因数の和:405

約数の個数: 160

約数和(自身を含む): 716525568

約数和(自身を除く): 495282288

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 131, 155, 186, 227, 240, 248, 262, 310, 372, 393, 454, 465, 496, 524, 620, 655, 681, 744, 786, 908, 930, 1048, 1135, 1240, 1310, 1362, 1488, 1572, 1816, 1860, 1965, 2096, 2270, 2480, 2620, 2724, 3144, 3405, 3632, 3720, 3930, 4061, 4540, 5240, 5448, 6288, 6810, 7037, 7440, 7860, 8122, 9080, 10480, 10896, 12183, 13620, 14074, 15720, 16244, 18160, 20305, 21111, 24366, 27240, 28148, 29737, 31440, 32488, 35185, 40610, 42222, 48732, 54480, 56296, 59474, 60915, 64976, 70370, 81220, 84444, 89211, 97464, 105555, 112592, 118948, 121830, 140740, 148685, 162440, 168888, 178422, 194928, 211110, 237896, 243660, 281480, 297370, 324880, 337776, 356844, 422220, 446055, 475792, 487320, 562960, 594740, 713688, 844440, 892110, 921847, 974640, 1189480, 1427376, 1688880, 1784220, 1843694, 2378960, 2765541, 3568440, 3687388, 4609235, 5531082, 7136880, 7374776, 9218470, 11062164, 13827705, 14749552, 18436940, 22124328, 27655410, 36873880, 44248656, 55310820, 73747760, 110621640, 221243280]

約数ペア:

[(1, 221243280), (2, 110621640), (3, 73747760), (4, 55310820), (5, 44248656), (6, 36873880), (8, 27655410), (10, 22124328), (12, 18436940), (15, 14749552), (16, 13827705), (20, 11062164), (24, 9218470), (30, 7374776), (31, 7136880), (40, 5531082), (48, 4609235), (60, 3687388), (62, 3568440), (80, 2765541), (93, 2378960), (120, 1843694), (124, 1784220), (131, 1688880), (155, 1427376), (186, 1189480), (227, 974640), (240, 921847), (248, 892110), (262, 844440), (310, 713688), (372, 594740), (393, 562960), (454, 487320), (465, 475792), (496, 446055), (524, 422220), (620, 356844), (655, 337776), (681, 324880), (744, 297370), (786, 281480), (908, 243660), (930, 237896), (1048, 211110), (1135, 194928), (1240, 178422), (1310, 168888), (1362, 162440), (1488, 148685), (1572, 140740), (1816, 121830), (1860, 118948), (1965, 112592), (2096, 105555), (2270, 97464), (2480, 89211), (2620, 84444), (2724, 81220), (3144, 70370), (3405, 64976), (3632, 60915), (3720, 59474), (3930, 56296), (4061, 54480), (4540, 48732), (5240, 42222), (5448, 40610), (6288, 35185), (6810, 32488), (7037, 31440), (7440, 29737), (7860, 28148), (8122, 27240), (9080, 24366), (10480, 21111), (10896, 20305), (12183, 18160), (13620, 16244), (14074, 15720)]