209240390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{677}}^1\times {\mathrm{997}}^1$

素因数の和:1712

約数の個数: 32

約数和(自身を含む): 389746944

約数和(自身を除く): 180506554

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 677, 997, 1354, 1994, 3385, 4985, 6770, 9970, 20987, 30907, 41974, 61814, 104935, 154535, 209870, 309070, 674969, 1349938, 3374845, 6749690, 20924039, 41848078, 104620195, 209240390]

約数ペア:

[(1, 209240390), (2, 104620195), (5, 41848078), (10, 20924039), (31, 6749690), (62, 3374845), (155, 1349938), (310, 674969), (677, 309070), (997, 209870), (1354, 154535), (1994, 104935), (3385, 61814), (4985, 41974), (6770, 30907), (9970, 20987)]