81980416

素因数分解:

$2^{10}\times 7^1\times {\mathrm{11437}}^1$

素因数の和:11464

約数の個数: 44

約数和(自身を含む): 187308688

約数和(自身を除く): 105328272

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1024, 1792, 3584, 7168, 11437, 22874, 45748, 80059, 91496, 160118, 182992, 320236, 365984, 640472, 731968, 1280944, 1463936, 2561888, 2927872, 5123776, 5855744, 10247552, 11711488, 20495104, 40990208, 81980416]

約数ペア:

[(1, 81980416), (2, 40990208), (4, 20495104), (7, 11711488), (8, 10247552), (14, 5855744), (16, 5123776), (28, 2927872), (32, 2561888), (56, 1463936), (64, 1280944), (112, 731968), (128, 640472), (224, 365984), (256, 320236), (448, 182992), (512, 160118), (896, 91496), (1024, 80059), (1792, 45748), (3584, 22874), (7168, 11437)]