21012656

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1151}}^1$

素因数の和:1329

約数の個数: 40

約数和(自身を含む): 46854144

約数和(自身を除く): 25841488

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1141, 1151, 1304, 2282, 2302, 2608, 4564, 4604, 8057, 9128, 9208, 16114, 18256, 18416, 32228, 64456, 128912, 187613, 375226, 750452, 1313291, 1500904, 2626582, 3001808, 5253164, 10506328, 21012656]

約数ペア:

[(1, 21012656), (2, 10506328), (4, 5253164), (7, 3001808), (8, 2626582), (14, 1500904), (16, 1313291), (28, 750452), (56, 375226), (112, 187613), (163, 128912), (326, 64456), (652, 32228), (1141, 18416), (1151, 18256), (1304, 16114), (2282, 9208), (2302, 9128), (2608, 8057), (4564, 4604)]