21391874

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21521}}^1$

素因数の和:21601

約数の個数: 16

約数和(自身を含む): 37190016

約数和(自身を除く): 15798142

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 21521, 43042, 150647, 301294, 1527991, 3055982, 10695937, 21391874]

約数ペア:

[(1, 21391874), (2, 10695937), (7, 3055982), (14, 1527991), (71, 301294), (142, 150647), (497, 43042), (994, 21521)]