20719810

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19009}}^1$

素因数の和:19125

約数の個数: 16

約数和(自身を含む): 37639800

約数和(自身を除く): 16919990

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19009, 38018, 95045, 190090, 2071981, 4143962, 10359905, 20719810]

約数ペア:

[(1, 20719810), (2, 10359905), (5, 4143962), (10, 2071981), (109, 190090), (218, 95045), (545, 38018), (1090, 19009)]