20816208

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:321

約数の個数: 120

約数和(自身を含む): 67549248

約数和(自身を除く): 46733040

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 107, 112, 126, 144, 168, 193, 214, 252, 321, 336, 386, 428, 504, 579, 642, 749, 772, 856, 963, 1008, 1158, 1284, 1351, 1498, 1544, 1712, 1737, 1926, 2247, 2316, 2568, 2702, 2996, 3088, 3474, 3852, 4053, 4494, 4632, 5136, 5404, 5992, 6741, 6948, 7704, 8106, 8988, 9264, 10808, 11984, 12159, 13482, 13896, 15408, 16212, 17976, 20651, 21616, 24318, 26964, 27792, 32424, 35952, 41302, 48636, 53928, 61953, 64848, 82604, 97272, 107856, 123906, 144557, 165208, 185859, 194544, 247812, 289114, 330416, 371718, 433671, 495624, 578228, 743436, 867342, 991248, 1156456, 1301013, 1486872, 1734684, 2312912, 2602026, 2973744, 3469368, 5204052, 6938736, 10408104, 20816208]

約数ペア:

[(1, 20816208), (2, 10408104), (3, 6938736), (4, 5204052), (6, 3469368), (7, 2973744), (8, 2602026), (9, 2312912), (12, 1734684), (14, 1486872), (16, 1301013), (18, 1156456), (21, 991248), (24, 867342), (28, 743436), (36, 578228), (42, 495624), (48, 433671), (56, 371718), (63, 330416), (72, 289114), (84, 247812), (107, 194544), (112, 185859), (126, 165208), (144, 144557), (168, 123906), (193, 107856), (214, 97272), (252, 82604), (321, 64848), (336, 61953), (386, 53928), (428, 48636), (504, 41302), (579, 35952), (642, 32424), (749, 27792), (772, 26964), (856, 24318), (963, 21616), (1008, 20651), (1158, 17976), (1284, 16212), (1351, 15408), (1498, 13896), (1544, 13482), (1712, 12159), (1737, 11984), (1926, 10808), (2247, 9264), (2316, 8988), (2568, 8106), (2702, 7704), (2996, 6948), (3088, 6741), (3474, 5992), (3852, 5404), (4053, 5136), (4494, 4632)]