21509530

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{6271}}^1$

素因数の和:6299

約数の個数: 32

約数和(自身を含む): 45158400

約数和(自身を除く): 23648870

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 6271, 12542, 31355, 43897, 62710, 87794, 219485, 307279, 438970, 614558, 1536395, 2150953, 3072790, 4301906, 10754765, 21509530]

約数ペア:

[(1, 21509530), (2, 10754765), (5, 4301906), (7, 3072790), (10, 2150953), (14, 1536395), (35, 614558), (49, 438970), (70, 307279), (98, 219485), (245, 87794), (343, 62710), (490, 43897), (686, 31355), (1715, 12542), (3430, 6271)]