81997725

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{17923}}^1$

素因数の和:17997

約数の個数: 24

約数和(自身を含む): 137799712

約数和(自身を除く): 55801987

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 915, 1525, 4575, 17923, 53769, 89615, 268845, 448075, 1093303, 1344225, 3279909, 5466515, 16399545, 27332575, 81997725]

約数ペア:

[(1, 81997725), (3, 27332575), (5, 16399545), (15, 5466515), (25, 3279909), (61, 1344225), (75, 1093303), (183, 448075), (305, 268845), (915, 89615), (1525, 53769), (4575, 17923)]