200917990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{220789}}^1$

素因数の和:220816

約数の個数: 32

約数和(自身を含む): 445112640

約数和(自身を除く): 244194650

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 220789, 441578, 1103945, 1545523, 2207890, 2870257, 3091046, 5740514, 7727615, 14351285, 15455230, 20091799, 28702570, 40183598, 100458995, 200917990]

約数ペア:

[(1, 200917990), (2, 100458995), (5, 40183598), (7, 28702570), (10, 20091799), (13, 15455230), (14, 14351285), (26, 7727615), (35, 5740514), (65, 3091046), (70, 2870257), (91, 2207890), (130, 1545523), (182, 1103945), (455, 441578), (910, 220789)]