20728620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1$

素因数の和:93

約数の個数: 216

約数和(自身を含む): 74889360

約数和(自身を除く): 54160740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 29, 30, 33, 36, 38, 44, 45, 55, 57, 58, 60, 66, 76, 87, 90, 95, 99, 110, 114, 116, 132, 145, 165, 171, 174, 180, 190, 198, 209, 220, 228, 261, 285, 290, 319, 330, 342, 348, 361, 380, 396, 418, 435, 495, 522, 551, 570, 580, 627, 638, 660, 684, 722, 836, 855, 870, 957, 990, 1044, 1045, 1083, 1102, 1140, 1254, 1276, 1305, 1444, 1595, 1653, 1710, 1740, 1805, 1881, 1914, 1980, 2090, 2166, 2204, 2508, 2610, 2755, 2871, 3135, 3190, 3249, 3306, 3420, 3610, 3762, 3828, 3971, 4180, 4332, 4785, 4959, 5220, 5415, 5510, 5742, 6061, 6270, 6380, 6498, 6612, 7220, 7524, 7942, 8265, 9405, 9570, 9918, 10469, 10830, 11020, 11484, 11913, 12122, 12540, 12996, 14355, 15884, 16245, 16530, 18183, 18810, 19140, 19836, 19855, 20938, 21660, 23826, 24244, 24795, 28710, 30305, 31407, 32490, 33060, 35739, 36366, 37620, 39710, 41876, 47652, 49590, 52345, 54549, 57420, 59565, 60610, 62814, 64980, 71478, 72732, 79420, 90915, 94221, 99180, 104690, 109098, 115159, 119130, 121220, 125628, 142956, 157035, 178695, 181830, 188442, 209380, 218196, 230318, 238260, 272745, 314070, 345477, 357390, 363660, 376884, 460636, 471105, 545490, 575795, 628140, 690954, 714780, 942210, 1036431, 1090980, 1151590, 1381908, 1727385, 1884420, 2072862, 2303180, 3454770, 4145724, 5182155, 6909540, 10364310, 20728620]

約数ペア:

[(1, 20728620), (2, 10364310), (3, 6909540), (4, 5182155), (5, 4145724), (6, 3454770), (9, 2303180), (10, 2072862), (11, 1884420), (12, 1727385), (15, 1381908), (18, 1151590), (19, 1090980), (20, 1036431), (22, 942210), (29, 714780), (30, 690954), (33, 628140), (36, 575795), (38, 545490), (44, 471105), (45, 460636), (55, 376884), (57, 363660), (58, 357390), (60, 345477), (66, 314070), (76, 272745), (87, 238260), (90, 230318), (95, 218196), (99, 209380), (110, 188442), (114, 181830), (116, 178695), (132, 157035), (145, 142956), (165, 125628), (171, 121220), (174, 119130), (180, 115159), (190, 109098), (198, 104690), (209, 99180), (220, 94221), (228, 90915), (261, 79420), (285, 72732), (290, 71478), (319, 64980), (330, 62814), (342, 60610), (348, 59565), (361, 57420), (380, 54549), (396, 52345), (418, 49590), (435, 47652), (495, 41876), (522, 39710), (551, 37620), (570, 36366), (580, 35739), (627, 33060), (638, 32490), (660, 31407), (684, 30305), (722, 28710), (836, 24795), (855, 24244), (870, 23826), (957, 21660), (990, 20938), (1044, 19855), (1045, 19836), (1083, 19140), (1102, 18810), (1140, 18183), (1254, 16530), (1276, 16245), (1305, 15884), (1444, 14355), (1595, 12996), (1653, 12540), (1710, 12122), (1740, 11913), (1805, 11484), (1881, 11020), (1914, 10830), (1980, 10469), (2090, 9918), (2166, 9570), (2204, 9405), (2508, 8265), (2610, 7942), (2755, 7524), (2871, 7220), (3135, 6612), (3190, 6498), (3249, 6380), (3306, 6270), (3420, 6061), (3610, 5742), (3762, 5510), (3828, 5415), (3971, 5220), (4180, 4959), (4332, 4785)]