20715460

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2609}}^1$

素因数の和:3015

約数の個数: 24

約数和(自身を含む): 43628760

約数和(自身を除く): 22913300

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2609, 3970, 5218, 7940, 10436, 13045, 26090, 52180, 1035773, 2071546, 4143092, 5178865, 10357730, 20715460]

約数ペア:

[(1, 20715460), (2, 10357730), (4, 5178865), (5, 4143092), (10, 2071546), (20, 1035773), (397, 52180), (794, 26090), (1588, 13045), (1985, 10436), (2609, 7940), (3970, 5218)]