21971712

素因数分解:

$2^8\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 68940032

約数和(自身を除く): 46968320

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 61, 64, 67, 84, 96, 112, 122, 128, 134, 168, 183, 192, 201, 224, 244, 256, 268, 336, 366, 384, 402, 427, 448, 469, 488, 536, 672, 732, 768, 804, 854, 896, 938, 976, 1072, 1281, 1344, 1407, 1464, 1608, 1708, 1792, 1876, 1952, 2144, 2562, 2688, 2814, 2928, 3216, 3416, 3752, 3904, 4087, 4288, 5124, 5376, 5628, 5856, 6432, 6832, 7504, 7808, 8174, 8576, 10248, 11256, 11712, 12261, 12864, 13664, 15008, 15616, 16348, 17152, 20496, 22512, 23424, 24522, 25728, 27328, 28609, 30016, 32696, 40992, 45024, 46848, 49044, 51456, 54656, 57218, 60032, 65392, 81984, 85827, 90048, 98088, 109312, 114436, 120064, 130784, 163968, 171654, 180096, 196176, 228872, 261568, 327936, 343308, 360192, 392352, 457744, 523136, 686616, 784704, 915488, 1046272, 1373232, 1569408, 1830976, 2746464, 3138816, 3661952, 5492928, 7323904, 10985856, 21971712]

約数ペア:

[(1, 21971712), (2, 10985856), (3, 7323904), (4, 5492928), (6, 3661952), (7, 3138816), (8, 2746464), (12, 1830976), (14, 1569408), (16, 1373232), (21, 1046272), (24, 915488), (28, 784704), (32, 686616), (42, 523136), (48, 457744), (56, 392352), (61, 360192), (64, 343308), (67, 327936), (84, 261568), (96, 228872), (112, 196176), (122, 180096), (128, 171654), (134, 163968), (168, 130784), (183, 120064), (192, 114436), (201, 109312), (224, 98088), (244, 90048), (256, 85827), (268, 81984), (336, 65392), (366, 60032), (384, 57218), (402, 54656), (427, 51456), (448, 49044), (469, 46848), (488, 45024), (536, 40992), (672, 32696), (732, 30016), (768, 28609), (804, 27328), (854, 25728), (896, 24522), (938, 23424), (976, 22512), (1072, 20496), (1281, 17152), (1344, 16348), (1407, 15616), (1464, 15008), (1608, 13664), (1708, 12864), (1792, 12261), (1876, 11712), (1952, 11256), (2144, 10248), (2562, 8576), (2688, 8174), (2814, 7808), (2928, 7504), (3216, 6832), (3416, 6432), (3752, 5856), (3904, 5628), (4087, 5376), (4288, 5124)]