209555997

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{75029}}^1$

素因数の和:75065

約数の個数: 24

約数和(自身を含む): 342136800

約数和(自身を除く): 132580803

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 75029, 225087, 525203, 1425551, 1575609, 3676421, 4276653, 9978857, 11029263, 29936571, 69851999, 209555997]

約数ペア:

[(1, 209555997), (3, 69851999), (7, 29936571), (19, 11029263), (21, 9978857), (49, 4276653), (57, 3676421), (133, 1575609), (147, 1425551), (399, 525203), (931, 225087), (2793, 75029)]