205428100

素因数分解:

$2^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{14779}}^1$

素因数の和:14932

約数の個数: 36

約数和(自身を含む): 449016400

約数和(自身を除く): 243588300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 139, 278, 556, 695, 1390, 2780, 3475, 6950, 13900, 14779, 29558, 59116, 73895, 147790, 295580, 369475, 738950, 1477900, 2054281, 4108562, 8217124, 10271405, 20542810, 41085620, 51357025, 102714050, 205428100]

約数ペア:

[(1, 205428100), (2, 102714050), (4, 51357025), (5, 41085620), (10, 20542810), (20, 10271405), (25, 8217124), (50, 4108562), (100, 2054281), (139, 1477900), (278, 738950), (556, 369475), (695, 295580), (1390, 147790), (2780, 73895), (3475, 59116), (6950, 29558), (13900, 14779)]