1281880

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 2930400

約数和(自身を除く): 1648520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 439, 584, 730, 878, 1460, 1756, 2195, 2920, 3512, 4390, 8780, 17560, 32047, 64094, 128188, 160235, 256376, 320470, 640940, 1281880]

約数ペア:

[(1, 1281880), (2, 640940), (4, 320470), (5, 256376), (8, 160235), (10, 128188), (20, 64094), (40, 32047), (73, 17560), (146, 8780), (292, 4390), (365, 3512), (439, 2920), (584, 2195), (730, 1756), (878, 1460)]