213872020

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{24359}}^1$

素因数の和:24807

約数の個数: 24

約数和(自身を含む): 450172800

約数和(自身を除く): 236300780

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780, 24359, 48718, 97436, 121795, 243590, 487180, 10693601, 21387202, 42774404, 53468005, 106936010, 213872020]

約数ペア:

[(1, 213872020), (2, 106936010), (4, 53468005), (5, 42774404), (10, 21387202), (20, 10693601), (439, 487180), (878, 243590), (1756, 121795), (2195, 97436), (4390, 48718), (8780, 24359)]