1291120

素因数分解:

$2^4\times 5^1\times {\mathrm{16139}}^1$

素因数の和:16152

約数の個数: 20

約数和(自身を含む): 3002040

約数和(自身を除く): 1710920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16139, 32278, 64556, 80695, 129112, 161390, 258224, 322780, 645560, 1291120]

約数ペア:

[(1, 1291120), (2, 645560), (4, 322780), (5, 258224), (8, 161390), (10, 129112), (16, 80695), (20, 64556), (40, 32278), (80, 16139)]