205123900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{66169}}^1$

素因数の和:66214

約数の個数: 36

約数和(自身を含む): 459484480

約数和(自身を除く): 254360580

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 66169, 132338, 264676, 330845, 661690, 1323380, 1654225, 2051239, 3308450, 4102478, 6616900, 8204956, 10256195, 20512390, 41024780, 51280975, 102561950, 205123900]

約数ペア:

[(1, 205123900), (2, 102561950), (4, 51280975), (5, 41024780), (10, 20512390), (20, 10256195), (25, 8204956), (31, 6616900), (50, 4102478), (62, 3308450), (100, 2051239), (124, 1654225), (155, 1323380), (310, 661690), (620, 330845), (775, 264676), (1550, 132338), (3100, 66169)]