20505744

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{6781}}^1$

素因数の和:6805

約数の個数: 80

約数和(自身を含む): 67277440

約数和(自身を除く): 46771696

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 48, 54, 56, 63, 72, 84, 108, 112, 126, 144, 168, 189, 216, 252, 336, 378, 432, 504, 756, 1008, 1512, 3024, 6781, 13562, 20343, 27124, 40686, 47467, 54248, 61029, 81372, 94934, 108496, 122058, 142401, 162744, 183087, 189868, 244116, 284802, 325488, 366174, 379736, 427203, 488232, 569604, 732348, 759472, 854406, 976464, 1139208, 1281609, 1464696, 1708812, 2278416, 2563218, 2929392, 3417624, 5126436, 6835248, 10252872, 20505744]

約数ペア:

[(1, 20505744), (2, 10252872), (3, 6835248), (4, 5126436), (6, 3417624), (7, 2929392), (8, 2563218), (9, 2278416), (12, 1708812), (14, 1464696), (16, 1281609), (18, 1139208), (21, 976464), (24, 854406), (27, 759472), (28, 732348), (36, 569604), (42, 488232), (48, 427203), (54, 379736), (56, 366174), (63, 325488), (72, 284802), (84, 244116), (108, 189868), (112, 183087), (126, 162744), (144, 142401), (168, 122058), (189, 108496), (216, 94934), (252, 81372), (336, 61029), (378, 54248), (432, 47467), (504, 40686), (756, 27124), (1008, 20343), (1512, 13562), (3024, 6781)]