20271888

素因数分解:

$2^4\times 3^2\times 7^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1$

素因数の和:71

約数の個数: 270

約数和(自身を含む): 75666474

約数和(自身を除く): 55394586

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 17, 18, 21, 24, 26, 28, 34, 36, 39, 42, 48, 49, 51, 52, 56, 63, 68, 72, 78, 84, 91, 98, 102, 104, 112, 117, 119, 126, 136, 144, 147, 153, 156, 168, 169, 182, 196, 204, 208, 221, 234, 238, 252, 272, 273, 294, 306, 312, 336, 338, 357, 364, 392, 408, 441, 442, 468, 476, 504, 507, 546, 588, 612, 624, 637, 663, 676, 714, 728, 784, 816, 819, 833, 882, 884, 936, 952, 1008, 1014, 1071, 1092, 1176, 1183, 1224, 1274, 1326, 1352, 1428, 1456, 1521, 1547, 1638, 1666, 1764, 1768, 1872, 1904, 1911, 1989, 2028, 2142, 2184, 2352, 2366, 2448, 2499, 2548, 2652, 2704, 2856, 2873, 3042, 3094, 3276, 3332, 3528, 3536, 3549, 3822, 3978, 4056, 4284, 4368, 4641, 4732, 4998, 5096, 5304, 5712, 5733, 5746, 6084, 6188, 6552, 6664, 7056, 7098, 7497, 7644, 7956, 8112, 8281, 8568, 8619, 9282, 9464, 9996, 10192, 10608, 10647, 10829, 11466, 11492, 12168, 12376, 13104, 13328, 13923, 14196, 14994, 15288, 15912, 16562, 17136, 17238, 18564, 18928, 19992, 20111, 21294, 21658, 22932, 22984, 24336, 24752, 24843, 25857, 27846, 28392, 29988, 30576, 31824, 32487, 33124, 34476, 37128, 39984, 40222, 42588, 43316, 45864, 45968, 49686, 51714, 55692, 56784, 59976, 60333, 64974, 66248, 68952, 74256, 74529, 80444, 85176, 86632, 91728, 97461, 99372, 103428, 111384, 119952, 120666, 129948, 132496, 137904, 140777, 149058, 160888, 170352, 173264, 180999, 194922, 198744, 206856, 222768, 241332, 259896, 281554, 298116, 321776, 361998, 389844, 397488, 413712, 422331, 482664, 519792, 563108, 596232, 723996, 779688, 844662, 965328, 1126216, 1192464, 1266993, 1447992, 1559376, 1689324, 2252432, 2533986, 2895984, 3378648, 5067972, 6757296, 10135944, 20271888]

約数ペア:

[(1, 20271888), (2, 10135944), (3, 6757296), (4, 5067972), (6, 3378648), (7, 2895984), (8, 2533986), (9, 2252432), (12, 1689324), (13, 1559376), (14, 1447992), (16, 1266993), (17, 1192464), (18, 1126216), (21, 965328), (24, 844662), (26, 779688), (28, 723996), (34, 596232), (36, 563108), (39, 519792), (42, 482664), (48, 422331), (49, 413712), (51, 397488), (52, 389844), (56, 361998), (63, 321776), (68, 298116), (72, 281554), (78, 259896), (84, 241332), (91, 222768), (98, 206856), (102, 198744), (104, 194922), (112, 180999), (117, 173264), (119, 170352), (126, 160888), (136, 149058), (144, 140777), (147, 137904), (153, 132496), (156, 129948), (168, 120666), (169, 119952), (182, 111384), (196, 103428), (204, 99372), (208, 97461), (221, 91728), (234, 86632), (238, 85176), (252, 80444), (272, 74529), (273, 74256), (294, 68952), (306, 66248), (312, 64974), (336, 60333), (338, 59976), (357, 56784), (364, 55692), (392, 51714), (408, 49686), (441, 45968), (442, 45864), (468, 43316), (476, 42588), (504, 40222), (507, 39984), (546, 37128), (588, 34476), (612, 33124), (624, 32487), (637, 31824), (663, 30576), (676, 29988), (714, 28392), (728, 27846), (784, 25857), (816, 24843), (819, 24752), (833, 24336), (882, 22984), (884, 22932), (936, 21658), (952, 21294), (1008, 20111), (1014, 19992), (1071, 18928), (1092, 18564), (1176, 17238), (1183, 17136), (1224, 16562), (1274, 15912), (1326, 15288), (1352, 14994), (1428, 14196), (1456, 13923), (1521, 13328), (1547, 13104), (1638, 12376), (1666, 12168), (1764, 11492), (1768, 11466), (1872, 10829), (1904, 10647), (1911, 10608), (1989, 10192), (2028, 9996), (2142, 9464), (2184, 9282), (2352, 8619), (2366, 8568), (2448, 8281), (2499, 8112), (2548, 7956), (2652, 7644), (2704, 7497), (2856, 7098), (2873, 7056), (3042, 6664), (3094, 6552), (3276, 6188), (3332, 6084), (3528, 5746), (3536, 5733), (3549, 5712), (3822, 5304), (3978, 5096), (4056, 4998), (4284, 4732), (4368, 4641)]