20538540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:101

約数の個数: 216

約数和(自身を含む): 73198944

約数和(自身を除く): 52660404

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 23, 30, 33, 36, 41, 44, 45, 46, 55, 60, 66, 69, 82, 90, 92, 99, 110, 115, 121, 123, 132, 138, 164, 165, 180, 198, 205, 207, 220, 230, 242, 246, 253, 276, 330, 345, 363, 369, 396, 410, 414, 451, 460, 484, 492, 495, 506, 605, 615, 660, 690, 726, 738, 759, 820, 828, 902, 943, 990, 1012, 1035, 1089, 1210, 1230, 1265, 1353, 1380, 1452, 1476, 1518, 1804, 1815, 1845, 1886, 1980, 2070, 2178, 2255, 2277, 2420, 2460, 2530, 2706, 2783, 2829, 3036, 3630, 3690, 3772, 3795, 4059, 4140, 4356, 4510, 4554, 4715, 4961, 5060, 5412, 5445, 5566, 5658, 6765, 7260, 7380, 7590, 8118, 8349, 8487, 9020, 9108, 9430, 9922, 10373, 10890, 11132, 11316, 11385, 13530, 13915, 14145, 14883, 15180, 16236, 16698, 16974, 18860, 19844, 20295, 20746, 21780, 22770, 24805, 25047, 27060, 27830, 28290, 29766, 31119, 33396, 33948, 40590, 41492, 41745, 42435, 44649, 45540, 49610, 50094, 51865, 55660, 56580, 59532, 62238, 74415, 81180, 83490, 84870, 89298, 93357, 99220, 100188, 103730, 114103, 124476, 125235, 148830, 155595, 166980, 169740, 178596, 186714, 207460, 223245, 228206, 250470, 297660, 311190, 342309, 373428, 446490, 456412, 466785, 500940, 570515, 622380, 684618, 892980, 933570, 1026927, 1141030, 1369236, 1711545, 1867140, 2053854, 2282060, 3423090, 4107708, 5134635, 6846180, 10269270, 20538540]

約数ペア:

[(1, 20538540), (2, 10269270), (3, 6846180), (4, 5134635), (5, 4107708), (6, 3423090), (9, 2282060), (10, 2053854), (11, 1867140), (12, 1711545), (15, 1369236), (18, 1141030), (20, 1026927), (22, 933570), (23, 892980), (30, 684618), (33, 622380), (36, 570515), (41, 500940), (44, 466785), (45, 456412), (46, 446490), (55, 373428), (60, 342309), (66, 311190), (69, 297660), (82, 250470), (90, 228206), (92, 223245), (99, 207460), (110, 186714), (115, 178596), (121, 169740), (123, 166980), (132, 155595), (138, 148830), (164, 125235), (165, 124476), (180, 114103), (198, 103730), (205, 100188), (207, 99220), (220, 93357), (230, 89298), (242, 84870), (246, 83490), (253, 81180), (276, 74415), (330, 62238), (345, 59532), (363, 56580), (369, 55660), (396, 51865), (410, 50094), (414, 49610), (451, 45540), (460, 44649), (484, 42435), (492, 41745), (495, 41492), (506, 40590), (605, 33948), (615, 33396), (660, 31119), (690, 29766), (726, 28290), (738, 27830), (759, 27060), (820, 25047), (828, 24805), (902, 22770), (943, 21780), (990, 20746), (1012, 20295), (1035, 19844), (1089, 18860), (1210, 16974), (1230, 16698), (1265, 16236), (1353, 15180), (1380, 14883), (1452, 14145), (1476, 13915), (1518, 13530), (1804, 11385), (1815, 11316), (1845, 11132), (1886, 10890), (1980, 10373), (2070, 9922), (2178, 9430), (2255, 9108), (2277, 9020), (2420, 8487), (2460, 8349), (2530, 8118), (2706, 7590), (2783, 7380), (2829, 7260), (3036, 6765), (3630, 5658), (3690, 5566), (3772, 5445), (3795, 5412), (4059, 5060), (4140, 4961), (4356, 4715), (4510, 4554)]