21685118

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{6271}}^1$

素因数の和:6312

約数の個数: 32

約数和(自身を含む): 42147840

約数和(自身を除く): 20462722

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 91, 133, 182, 247, 266, 494, 1729, 3458, 6271, 12542, 43897, 81523, 87794, 119149, 163046, 238298, 570661, 834043, 1141322, 1548937, 1668086, 3097874, 10842559, 21685118]

約数ペア:

[(1, 21685118), (2, 10842559), (7, 3097874), (13, 1668086), (14, 1548937), (19, 1141322), (26, 834043), (38, 570661), (91, 238298), (133, 163046), (182, 119149), (247, 87794), (266, 81523), (494, 43897), (1729, 12542), (3458, 6271)]