17971420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20897}}^1$

素因数の和:20949

約数の個数: 24

約数和(自身を含む): 38619504

約数和(自身を除く): 20648084

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 20897, 41794, 83588, 104485, 208970, 417940, 898571, 1797142, 3594284, 4492855, 8985710, 17971420]

約数ペア:

[(1, 17971420), (2, 8985710), (4, 4492855), (5, 3594284), (10, 1797142), (20, 898571), (43, 417940), (86, 208970), (172, 104485), (215, 83588), (430, 41794), (860, 20897)]