28262020

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{4049}}^1$

素因数の和:4407

約数の個数: 24

約数和(自身を含む): 59535000

約数和(自身を除く): 31272980

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 4049, 6980, 8098, 16196, 20245, 40490, 80980, 1413101, 2826202, 5652404, 7065505, 14131010, 28262020]

約数ペア:

[(1, 28262020), (2, 14131010), (4, 7065505), (5, 5652404), (10, 2826202), (20, 1413101), (349, 80980), (698, 40490), (1396, 20245), (1745, 16196), (3490, 8098), (4049, 6980)]