68918800

素因数分解:

$2^4\times 5^2\times {\mathrm{172297}}^1$

素因数の和:172315

約数の個数: 30

約数和(自身を含む): 165578378

約数和(自身を除く): 96659578

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 172297, 344594, 689188, 861485, 1378376, 1722970, 2756752, 3445940, 4307425, 6891880, 8614850, 13783760, 17229700, 34459400, 68918800]

約数ペア:

[(1, 68918800), (2, 34459400), (4, 17229700), (5, 13783760), (8, 8614850), (10, 6891880), (16, 4307425), (20, 3445940), (25, 2756752), (40, 1722970), (50, 1378376), (80, 861485), (100, 689188), (200, 344594), (400, 172297)]