28316985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{379}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 48263040

約数和(自身を除く): 19946055

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 293, 379, 879, 1137, 1465, 1895, 4395, 4981, 5685, 6443, 14943, 19329, 24905, 32215, 74715, 96645, 111047, 333141, 555235, 1665705, 1887799, 5663397, 9438995, 28316985]

約数ペア:

[(1, 28316985), (3, 9438995), (5, 5663397), (15, 1887799), (17, 1665705), (51, 555235), (85, 333141), (255, 111047), (293, 96645), (379, 74715), (879, 32215), (1137, 24905), (1465, 19329), (1895, 14943), (4395, 6443), (4981, 5685)]