21970780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84503}}^1$

素因数の和:84525

約数の個数: 24

約数和(自身を含む): 49688352

約数和(自身を除く): 27717572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84503, 169006, 338012, 422515, 845030, 1098539, 1690060, 2197078, 4394156, 5492695, 10985390, 21970780]

約数ペア:

[(1, 21970780), (2, 10985390), (4, 5492695), (5, 4394156), (10, 2197078), (13, 1690060), (20, 1098539), (26, 845030), (52, 422515), (65, 338012), (130, 169006), (260, 84503)]