19807920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:132

約数の個数: 240

約数和(自身を含む): 75557664

約数和(自身を除く): 55749744

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 41, 44, 45, 48, 55, 60, 61, 66, 72, 80, 82, 88, 90, 99, 110, 120, 122, 123, 132, 144, 164, 165, 176, 180, 183, 198, 205, 220, 240, 244, 246, 264, 305, 328, 330, 360, 366, 369, 396, 410, 440, 451, 488, 492, 495, 528, 549, 610, 615, 656, 660, 671, 720, 732, 738, 792, 820, 880, 902, 915, 976, 984, 990, 1098, 1220, 1230, 1320, 1342, 1353, 1464, 1476, 1584, 1640, 1804, 1830, 1845, 1968, 1980, 2013, 2196, 2255, 2440, 2460, 2501, 2640, 2684, 2706, 2745, 2928, 2952, 3280, 3355, 3608, 3660, 3690, 3960, 4026, 4059, 4392, 4510, 4880, 4920, 5002, 5368, 5412, 5490, 5904, 6039, 6710, 6765, 7216, 7320, 7380, 7503, 7920, 8052, 8118, 8784, 9020, 9840, 10004, 10065, 10736, 10824, 10980, 12078, 12505, 13420, 13530, 14640, 14760, 15006, 16104, 16236, 18040, 20008, 20130, 20295, 21648, 21960, 22509, 24156, 25010, 26840, 27060, 27511, 29520, 30012, 30195, 32208, 32472, 36080, 37515, 40016, 40260, 40590, 43920, 45018, 48312, 50020, 53680, 54120, 55022, 60024, 60390, 64944, 75030, 80520, 81180, 82533, 90036, 96624, 100040, 108240, 110044, 112545, 120048, 120780, 137555, 150060, 161040, 162360, 165066, 180072, 200080, 220088, 225090, 241560, 247599, 275110, 300120, 324720, 330132, 360144, 412665, 440176, 450180, 483120, 495198, 550220, 600240, 660264, 825330, 900360, 990396, 1100440, 1237995, 1320528, 1650660, 1800720, 1980792, 2200880, 2475990, 3301320, 3961584, 4951980, 6602640, 9903960, 19807920]

約数ペア:

[(1, 19807920), (2, 9903960), (3, 6602640), (4, 4951980), (5, 3961584), (6, 3301320), (8, 2475990), (9, 2200880), (10, 1980792), (11, 1800720), (12, 1650660), (15, 1320528), (16, 1237995), (18, 1100440), (20, 990396), (22, 900360), (24, 825330), (30, 660264), (33, 600240), (36, 550220), (40, 495198), (41, 483120), (44, 450180), (45, 440176), (48, 412665), (55, 360144), (60, 330132), (61, 324720), (66, 300120), (72, 275110), (80, 247599), (82, 241560), (88, 225090), (90, 220088), (99, 200080), (110, 180072), (120, 165066), (122, 162360), (123, 161040), (132, 150060), (144, 137555), (164, 120780), (165, 120048), (176, 112545), (180, 110044), (183, 108240), (198, 100040), (205, 96624), (220, 90036), (240, 82533), (244, 81180), (246, 80520), (264, 75030), (305, 64944), (328, 60390), (330, 60024), (360, 55022), (366, 54120), (369, 53680), (396, 50020), (410, 48312), (440, 45018), (451, 43920), (488, 40590), (492, 40260), (495, 40016), (528, 37515), (549, 36080), (610, 32472), (615, 32208), (656, 30195), (660, 30012), (671, 29520), (720, 27511), (732, 27060), (738, 26840), (792, 25010), (820, 24156), (880, 22509), (902, 21960), (915, 21648), (976, 20295), (984, 20130), (990, 20008), (1098, 18040), (1220, 16236), (1230, 16104), (1320, 15006), (1342, 14760), (1353, 14640), (1464, 13530), (1476, 13420), (1584, 12505), (1640, 12078), (1804, 10980), (1830, 10824), (1845, 10736), (1968, 10065), (1980, 10004), (2013, 9840), (2196, 9020), (2255, 8784), (2440, 8118), (2460, 8052), (2501, 7920), (2640, 7503), (2684, 7380), (2706, 7320), (2745, 7216), (2928, 6765), (2952, 6710), (3280, 6039), (3355, 5904), (3608, 5490), (3660, 5412), (3690, 5368), (3960, 5002), (4026, 4920), (4059, 4880), (4392, 4510)]