28392020

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{2789}}^1$

素因数の和:3307

約数の個数: 24

約数和(自身を含む): 59761800

約数和(自身を除く): 31369780

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 2789, 5090, 5578, 10180, 11156, 13945, 27890, 55780, 1419601, 2839202, 5678404, 7098005, 14196010, 28392020]

約数ペア:

[(1, 28392020), (2, 14196010), (4, 7098005), (5, 5678404), (10, 2839202), (20, 1419601), (509, 55780), (1018, 27890), (2036, 13945), (2545, 11156), (2789, 10180), (5090, 5578)]