21285190

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{125207}}^1$

素因数の和:125231

約数の個数: 16

約数和(自身を含む): 40567392

約数和(自身を除く): 19282202

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 125207, 250414, 626035, 1252070, 2128519, 4257038, 10642595, 21285190]

約数ペア:

[(1, 21285190), (2, 10642595), (5, 4257038), (10, 2128519), (17, 1252070), (34, 626035), (85, 250414), (170, 125207)]