209645940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{499157}}^1$

素因数の和:499176

約数の個数: 48

約数和(自身を含む): 670868352

約数和(自身を除く): 461222412

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 499157, 998314, 1497471, 1996628, 2495785, 2994942, 3494099, 4991570, 5989884, 6988198, 7487355, 9983140, 10482297, 13976396, 14974710, 17470495, 20964594, 29949420, 34940990, 41929188, 52411485, 69881980, 104822970, 209645940]

約数ペア:

[(1, 209645940), (2, 104822970), (3, 69881980), (4, 52411485), (5, 41929188), (6, 34940990), (7, 29949420), (10, 20964594), (12, 17470495), (14, 14974710), (15, 13976396), (20, 10482297), (21, 9983140), (28, 7487355), (30, 6988198), (35, 5989884), (42, 4991570), (60, 3494099), (70, 2994942), (84, 2495785), (105, 1996628), (140, 1497471), (210, 998314), (420, 499157)]