20705520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:92

約数の個数: 240

約数和(自身を含む): 75995136

約数和(自身を除く): 55289616

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 23, 24, 30, 31, 33, 40, 44, 46, 48, 55, 60, 62, 66, 69, 80, 88, 92, 93, 110, 115, 120, 121, 124, 132, 138, 155, 165, 176, 184, 186, 220, 230, 240, 242, 248, 253, 264, 276, 310, 330, 341, 345, 363, 368, 372, 440, 460, 465, 484, 496, 506, 528, 552, 605, 620, 660, 682, 690, 713, 726, 744, 759, 880, 920, 930, 968, 1012, 1023, 1104, 1210, 1240, 1265, 1320, 1364, 1380, 1426, 1452, 1488, 1518, 1705, 1815, 1840, 1860, 1936, 2024, 2046, 2139, 2420, 2480, 2530, 2640, 2728, 2760, 2783, 2852, 2904, 3036, 3410, 3565, 3630, 3720, 3751, 3795, 4048, 4092, 4278, 4840, 5060, 5115, 5456, 5520, 5566, 5704, 5808, 6072, 6820, 7130, 7260, 7440, 7502, 7590, 7843, 8184, 8349, 8556, 9680, 10120, 10230, 10695, 11132, 11253, 11408, 12144, 13640, 13915, 14260, 14520, 15004, 15180, 15686, 16368, 16698, 17112, 18755, 20240, 20460, 21390, 22264, 22506, 23529, 27280, 27830, 28520, 29040, 30008, 30360, 31372, 33396, 34224, 37510, 39215, 40920, 41745, 42780, 44528, 45012, 47058, 55660, 56265, 57040, 60016, 60720, 62744, 66792, 75020, 78430, 81840, 83490, 85560, 86273, 90024, 94116, 111320, 112530, 117645, 125488, 133584, 150040, 156860, 166980, 171120, 172546, 180048, 188232, 222640, 225060, 235290, 258819, 300080, 313720, 333960, 345092, 376464, 431365, 450120, 470580, 517638, 627440, 667920, 690184, 862730, 900240, 941160, 1035276, 1294095, 1380368, 1725460, 1882320, 2070552, 2588190, 3450920, 4141104, 5176380, 6901840, 10352760, 20705520]

約数ペア:

[(1, 20705520), (2, 10352760), (3, 6901840), (4, 5176380), (5, 4141104), (6, 3450920), (8, 2588190), (10, 2070552), (11, 1882320), (12, 1725460), (15, 1380368), (16, 1294095), (20, 1035276), (22, 941160), (23, 900240), (24, 862730), (30, 690184), (31, 667920), (33, 627440), (40, 517638), (44, 470580), (46, 450120), (48, 431365), (55, 376464), (60, 345092), (62, 333960), (66, 313720), (69, 300080), (80, 258819), (88, 235290), (92, 225060), (93, 222640), (110, 188232), (115, 180048), (120, 172546), (121, 171120), (124, 166980), (132, 156860), (138, 150040), (155, 133584), (165, 125488), (176, 117645), (184, 112530), (186, 111320), (220, 94116), (230, 90024), (240, 86273), (242, 85560), (248, 83490), (253, 81840), (264, 78430), (276, 75020), (310, 66792), (330, 62744), (341, 60720), (345, 60016), (363, 57040), (368, 56265), (372, 55660), (440, 47058), (460, 45012), (465, 44528), (484, 42780), (496, 41745), (506, 40920), (528, 39215), (552, 37510), (605, 34224), (620, 33396), (660, 31372), (682, 30360), (690, 30008), (713, 29040), (726, 28520), (744, 27830), (759, 27280), (880, 23529), (920, 22506), (930, 22264), (968, 21390), (1012, 20460), (1023, 20240), (1104, 18755), (1210, 17112), (1240, 16698), (1265, 16368), (1320, 15686), (1364, 15180), (1380, 15004), (1426, 14520), (1452, 14260), (1488, 13915), (1518, 13640), (1705, 12144), (1815, 11408), (1840, 11253), (1860, 11132), (1936, 10695), (2024, 10230), (2046, 10120), (2139, 9680), (2420, 8556), (2480, 8349), (2530, 8184), (2640, 7843), (2728, 7590), (2760, 7502), (2783, 7440), (2852, 7260), (2904, 7130), (3036, 6820), (3410, 6072), (3565, 5808), (3630, 5704), (3720, 5566), (3751, 5520), (3795, 5456), (4048, 5115), (4092, 5060), (4278, 4840)]