21498120

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1$

素因数の和:492

約数の個数: 192

約数和(自身を含む): 84240000

約数和(自身を除く): 62741880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 28, 30, 35, 36, 38, 40, 42, 45, 56, 57, 60, 63, 70, 72, 76, 84, 90, 95, 105, 114, 120, 126, 133, 140, 152, 168, 171, 180, 190, 210, 228, 252, 266, 280, 285, 315, 342, 360, 380, 399, 420, 449, 456, 504, 532, 570, 630, 665, 684, 760, 798, 840, 855, 898, 1064, 1140, 1197, 1260, 1330, 1347, 1368, 1596, 1710, 1796, 1995, 2245, 2280, 2394, 2520, 2660, 2694, 3143, 3192, 3420, 3592, 3990, 4041, 4490, 4788, 5320, 5388, 5985, 6286, 6735, 6840, 7980, 8082, 8531, 8980, 9429, 9576, 10776, 11970, 12572, 13470, 15715, 15960, 16164, 17062, 17960, 18858, 20205, 23940, 25144, 25593, 26940, 28287, 31430, 32328, 34124, 37716, 40410, 42655, 47145, 47880, 51186, 53880, 56574, 59717, 62860, 68248, 75432, 76779, 80820, 85310, 94290, 102372, 113148, 119434, 125720, 127965, 141435, 153558, 161640, 170620, 179151, 188580, 204744, 226296, 238868, 255930, 282870, 298585, 307116, 341240, 358302, 377160, 383895, 477736, 511860, 537453, 565740, 597170, 614232, 716604, 767790, 895755, 1023720, 1074906, 1131480, 1194340, 1433208, 1535580, 1791510, 2149812, 2388680, 2687265, 3071160, 3583020, 4299624, 5374530, 7166040, 10749060, 21498120]

約数ペア:

[(1, 21498120), (2, 10749060), (3, 7166040), (4, 5374530), (5, 4299624), (6, 3583020), (7, 3071160), (8, 2687265), (9, 2388680), (10, 2149812), (12, 1791510), (14, 1535580), (15, 1433208), (18, 1194340), (19, 1131480), (20, 1074906), (21, 1023720), (24, 895755), (28, 767790), (30, 716604), (35, 614232), (36, 597170), (38, 565740), (40, 537453), (42, 511860), (45, 477736), (56, 383895), (57, 377160), (60, 358302), (63, 341240), (70, 307116), (72, 298585), (76, 282870), (84, 255930), (90, 238868), (95, 226296), (105, 204744), (114, 188580), (120, 179151), (126, 170620), (133, 161640), (140, 153558), (152, 141435), (168, 127965), (171, 125720), (180, 119434), (190, 113148), (210, 102372), (228, 94290), (252, 85310), (266, 80820), (280, 76779), (285, 75432), (315, 68248), (342, 62860), (360, 59717), (380, 56574), (399, 53880), (420, 51186), (449, 47880), (456, 47145), (504, 42655), (532, 40410), (570, 37716), (630, 34124), (665, 32328), (684, 31430), (760, 28287), (798, 26940), (840, 25593), (855, 25144), (898, 23940), (1064, 20205), (1140, 18858), (1197, 17960), (1260, 17062), (1330, 16164), (1347, 15960), (1368, 15715), (1596, 13470), (1710, 12572), (1796, 11970), (1995, 10776), (2245, 9576), (2280, 9429), (2394, 8980), (2520, 8531), (2660, 8082), (2694, 7980), (3143, 6840), (3192, 6735), (3420, 6286), (3592, 5985), (3990, 5388), (4041, 5320), (4490, 4788)]